Tag Archives: Wildlife of Kodiak Island

Pacific Spiny Dogfish Shark (Squalus suckleyi)

December 20, 2020Fish, Kodiak WildlifeDogfish Shark, Pacific Spiny Dogfish, Pacific Spiny Dogfish biology, Robin Barefield, Sharks in Alaska, Sharks near Kodiak Island, Spiny Dogfish, Squalus suckleyi, Wildlife of Kodiak Islandadmin

One of the most abundant sharks globally, Pacific spiny dogfish belongs to the family Squalidae (the dogfish family). Pacific spiny dogfish range from the Bering Sea to Baja California to Japan and the Korean Peninsula. They are most common off the west coast of the U.S. and British Columbia. Dogfish are typically bottom dwellers and inhabit depths from shallow coastal waters to 4,055 ft. (1,236 m). They prefer water temperatures ranging from 44.6° F to 59° F (7-15° C).

Pacific spiny dogfish are small, streamlined sharks. Males can grow to 3.3 ft. (1 m), while females measure a maximum length of 4 ft. (1.2 m). A dogfish has a distinctive snout, large eyes, and a flattened head. The body has a cylindrical shape. The top half is dark gray with scattered white spots, and this color fades to light gray or white on the underneath side of the fish. The teeth of a dogfish have sharp edges, but they are specialized for grinding instead of tearing. Dermal denticles comprise the scales of a dogfish. These denticles are the same rigid material found in their teeth, and they make the skin very tough.

A dogfish does not have an anal fin, but it has two dorsal fins, with a spine in front of each fin. These spines are venomous, and the shark uses them as protection against potential predators, such as other sharks or humans. The dogfish employs its two dorsal fins in different ways. The first dorsal fin helps it maintain stability while swimming, and the second dorsal fin provides thrust. The large caudal fin (or tail) allows the shark to maneuver quickly and efficiently through the water.

A dogfish has five gills on either side of its body, but unlike bony fish, a dogfish does not have gill covers. To breathe through these gills, the shark must remain in constant motion, so it either must continually swim or rest in a current where water rushes past its gills. A dogfish has an adaptation called spiracles, aiding it to breathe in calm water. These specialized gills, located behind the eyes, allow the shark to breathe when resting or eating.

Dogfish earned their common name from fishermen who observed them hunting in packs like dogs. Schools of hundreds of dogfish swim close together during the day, hunting herring, capelin, other small fish, squid, octopus, and even jellyfish. The dogfish uses its teeth and not its spines when feeding. It uses its spines for protection. Scientists think dogfish eat less in the winter when they migrate to great depths. They are preyed upon by larger sharks, seals, orcas, and some larger fish.

Spiny dogfish can live 100 years, and females do not reach sexual maturity until they are approximately 35 years old. Males can reproduce at an average age of 19. Males internally fertilize females in October or November. Dogfish are ovoviviparous, meaning females give birth to live young, and they have a gestation of nearly 24 months, the longest of any vertebrate. They give birth to up to 22 pups, and the newborns range in length from 8 ½ to 12 inches (21.6 – 30.5 cm).

Pacific spiny dogfish stocks remain stable and are carefully managed. In some areas of the world, a commercial market exists for dogfish, and they are considered a good food fish, but they are not yet in demand as a food source in the United States.

We usually catch a few dogfish each year during our sportfishing trips, but this past summer, we landed as many as 20 per day while halibut fishing. Dogfish are tricky to release because while you try to get the hook out of its mouth, the shark attempts to whip its body into a position to stab you with one of its venomous spines. I was not pleased to encounter so many dogfish this past summer, but more importantly, I wondered why we were catching so many dogfish. I speculate that the dramatic decrease in the Pacific cod population led to an increase in small fish species typically eaten by cod. Dogfish probably are exploiting an opening in the food chain. Will their presence affect the abundance of other fish species in this region of the North Pacific? Only time will tell.

Happy holidays, and I wish us all a nicer, brighter 2021!

Robin Barefield is the author of four Alaska wilderness mystery novels, Big Game, Murder Over Kodiak, and The Fisherman’s Daughter, and Karluk Bones. Also, sign up below to subscribe to her free, monthly newsletter on true murder and mystery in Alaska, and listen to her podcast, Murder and Mystery in the Last Frontier.

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Whale Season

May 24, 2020Fin Whale, Humpback Whale, killer whale, Kodiak WildlifeFin Whale, Grey Whale, humpback whale, Minke Whale, Robin Barefield, Sei Whale, Whale Biology, Whale Evolution, whales, whales in Alaska, Wildlife of Kodiak Islandadmin

Spring marks the beginning of whale season here in Alaska. The humpbacks and grey whales begin arriving from their long migrations north from their wintering grounds, and the north Pacific Ocean teems with life as the waters warm and phytoplankton blooms. Swarms of krill and other zooplankton feast on the abundant plant life, and fish such as herring, eulachon, and similar species follow the zooplankton into the bays on Kodiak Island. In turn, huge baleen whales, including fin, sei, and humpback, gather to eat the krill and small fish. I am thrilled any time I see a whale, but I think it’s a special treat to stand in my front yard and watch these magnificent creatures feed and blow.

Sea mammals evolved from land mammals, and they resemble us in many ways. Whales, like humans, have lungs and must breathe air to survive. They are warm-blooded, and they bear live young. Whales nurse their young with milk, and while you might not think of a whale having hair, all whales do have hair at some stage in their development. All members of the order Cetacea evolved 45 million years ago from hoofed mammals, such as cows, sheep, and camels. Comparisons of specific milk protein genes indicate the hippopotamus is the closest, living, land relative to whales.

The order Cetacea contains more than eighty species; although, taxonomists debate the precise number. Biologists have recorded thirty-nine cetacean species in the North American Pacific.

Cetacea comes from the Greek word “ketos,” which means “whale.” All cetaceans have forelimbs modified into flippers and no hind limbs. They have horizontally flattened tails, and they breathe through a nostril, or blowhole, located on the top of the head. A blowhole has a nasal plug that remains closed except when forced open by muscular contractions to breathe. This plug seals when the whale dives. A whale has internal sensory and reproductive organs to reduce drag while swimming, and they do not have external ears but instead have a complex internal system of air sinuses and bones to detect sounds.The lungs of a cetacean are relatively small, highly elastic, and elongated. A whale has a muscular diaphragm, allowing the animal to purge a large amount of air in a short time. With each respiration, a whale replaces 80% to 90% of the air in its lungs. During a deep dive, a cetacean slows its heart rate and decreases blood flow to peripheral tissues.

Cetaceans living in the cold ocean waters of the North Pacific must somehow maintain a body temperature nearly the same as a human’s body temperature. A whale uses several mechanisms to accomplish this feat. First, it has a thick layer of blubber with few blood vessels, reducing the heat loss at the body surface. A whale has a counter-current heat exchanger, with arteries surrounding veins at the periphery. Hence, vessels flowing from the cold periphery to the warm core partially absorb heat lost by vessels flowing from the core toward the surface. A cetacean also has a high metabolic rate to produce heat, and it has a low body surface to volume ratio, which conserves heat. Finally, a whale has a slower respiration rate than a land mammal, so the whale expels warm air less frequently.

Most cetaceans produce large calves, and the large body volume relative to surface area minimizes heat loss in the calf. Calves are born tail first, and as soon as the calf emerges from the birth canal, the mother or another whale nudges it to the surface for its first few breaths.^[3]Cetacean mothers nurse their calves with a pair of teats concealed in slits along the body wall. The milk has a high-fat content, and the calves grow at a rapid rate. Whale mothers tend and guard their calves closely, and a calf often rides the bow wave or the convection currents produced by its mother or another adult when the whales travel. This method of travel is so efficient that the calf barely needs to move its flukes to keep up with the group.

Two suborders comprise the order Cetacea: The Mysticeti or baleen whales and the Odontoceti, or toothed whales. We most commonly see fin whales in Uyak Bay, but we also spot sei, humpback, minke, and killer whales. No matter the species, whenever I see a spout of water, excitement buzzes through me while I watch one of the largest animals on the planet.

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Alaska Wilderness Mystery Novels by Author Robin Barefield: Big Game, Murder Over Kodiak, The Fisherman's Daughter, and Karluk Bones. — Write caption…

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How do Deer Antlers Grow?

June 3, 2018Kodiak Wildlife, Sitka black-tailed deerDeer Antler Growth, Deer Biology, How Fast Do Deer Antlers Grow?, Kodiak Deer, Sitka black-tailed deer, Wildlife of Kodiak Islandadmin

Why do deer have antlers, and how do they grow so fast? Can you imagine having to walk around with a set of antlers on your head? I get a headache just thinking about it.

Last year in late May, we saw a Sitka black-tailed deer doe with two newborn fawns in our yard. They took up residence nearby, and we still see the trio nearly every day as they graze on our sprouting grass. The fawns are now almost the same size as the doe, and I wonder when they will wander off on their own. Will the doe have a new set of fawns this year? She doesn’t look pregnant, but we will know for certain in a few weeks.

Does between the ages of five and ten are in their prime and usually produce two fawns a year. Mating season on Kodiak occurs between mid-October and late November. The gestation period is six to seven months, so fawns are born from late May through June. Twins are the most common, although many young does only produce a single fawn, and triplets do sometimes occur. Newborn fawns weigh between 6.0 and 8.8 lbs. (2.7 to 4.0 kgs.). For the first week, a newborn fawn has no scent, allowing the mother to leave the fawn hidden as she browses for food to rebuild her energy reserves after giving birth.

The two young deer we often see in our yard are bucks, and they have little nubs on their heads. Bucks begin to grow a new set of antlers in the late spring because the increased daylight in the spring stimulates the hormones that regulate antler growth. During the spring and summer, antlers receive a rich supply of blood and are covered by a fine membrane called “velvet.” At this time, the antlers are fragile and vulnerable to cuts and bruises. By August, antler growth slows, and they begin to harden. A few weeks later, antler growth ceases, blood flow to the antlers stops, and the velvet dries up and falls off. Bucks then retain these hard, polished antlers throughout the mating season. After the mating season, cells start to de-mineralize the bone between the pedicle and the antler, weakening the connection between the skull and the antler, and the antler falls off. On Kodiak, deer normally begin dropping their antlers from mid-to-late December.

Sitka black-tailed deer antlers are fairly small compared to other species of deer and typically have three or four points on either side, including the eye guards. A very large buck might have five points on each side, including the eye guards.

Deer antlers grow at an amazing rate. Biologists have determined white-tailed deer antlers can grow as much as one-half an inch (1.27 cm) per day during their peak growth. Antler size is dependent on age, nutrition, and genetics. Antlers are made from bone, and they develop from the pedicle on the frontal bone of the skull. Male fawns produce “button” antlers at the age of four to five months, and they begin growing their first noticeable antlers the following year. A young buck’s first antlers may be only single spikes, but antler size usually increases with age until they reach a maximum size. Antler growth requires a great deal of energy, so antler size is dependent on good nutrition and environmental conditions. A buck may produce smaller antlers the year following an extremely harsh winter.

While biologists don’t know why bucks grow antlers, several theories have been proposed:

(1) A buck with large antlers may signal to a potential mate that he is healthy and possess good genes.
(2) Antlers may be used as a weapon during the breeding season to establish dominance between males.
(3) The size of the antlers alone may display age-related dominance without the males having to fight. Although, current research does not support this theory.
(4) Deer may use antlers

to defend themselves against predators. Although, this would only be beneficial for bucks since does don’t have antlers.

It is likely a combination of two or more of these theories point to the true purpose of antlers.

The Kodiak winter of 2016/2017 was very harsh, and biologists estimated as much as 80% of the deer population on the island died. We saw deer carcasses everywhere we hiked in the late winter of 2017. The 2017/2018 winter was mild, and the deer fared much better. The deer wandering through our yard this spring look fat and healthy, and I suspect we will see a bumper crop of fawns this summer.

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Next week, I’ll cover some interesting facts about deer.

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Robin Barefield is the author of three Alaska wilderness mystery novels, Big Game, Murder Over Kodiak, and The Fisherman’s Daughter. To download a free copy of one of her novels, watch her webinar about how she became an author and why she writes Alaska wilderness mysteries. If you like audiobooks, check out her audiobook version of Murder Over Kodiak. Also, sign up below to subscribe to her free, monthly newsletter on true murder and mystery in Alaska.

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How Do Red Foxes Communicate?

May 27, 2018Kodiak Wildlife, Red Foxred fox, Red Fox on Kodiak Island, Red Foxes Communicate, Robin Barefield, Wildlife of Kodiak Islandadmin

You only need to hear the scream of a fox in the middle of the night to know foxes communicate with each other and with other animals. Like dogs, red foxes communicate through body language, vocalizations, and scent.

Most body posturing is either aggressive/dominant or fearful/submissive. A curious fox will rotate his ears while sniffing, and when playing, a fox might perk up his ears and rise on his hind legs. When afraid, red foxes grin in submission, arch their backs, curve their bodies, crouch their legs, point their ears backward and pressed against their skulls, and swing their tails back and forth. Submissive foxes maintain a lower posture when approaching a dominant fox. When two evenly- matched foxes square off, they approach each other sideways and display postures suggesting a mixture of fear and aggression, with ears pulled back, tails lashing, and backs arched. When attacking each other, a red fox approaches its opponent head-on instead of sideways. They hold their tails aloft and rotate their ears to the sides.

In addition to body language, red foxes use vocalization to communicate. They have a wide vocal range and produce sounds spanning five octaves. Biologists have divided most of these sounds into contact calls and interaction calls. Contact calls are used when two foxes approach each other or when adults greet their kits. Foxes use interaction calls either during courting or when dominant and submissive foxes interact or during an aggressive encounter. A call that does not fit into either of these categories is a long, monosyllabic “waaaaah” sound made during the mating season, and biologists think this vocalization is a female calling for males.

The red fox has extremely good hearing, and unlike other mammals, it can hear low-frequency sounds well, allowing it to detect small animals moving underground, so it can dig the prey out of the dirt or snow. Although not as acute as its hearing, the red fox has a good sense of smell and binocular vision that reacts mainly to movement.

A fox’s sense of smell allows it to use scent to communicate. A fox urinates to mark its territory and food caches. A male raises one hind leg and sprays urine in front of him, while a female squats and sprays urine between her hind legs. Then, anal and supra-caudal glands, as well as glands around the lips, jaws, and on the pads of the feet, aid another fox in detecting the scents marking the first fox’s territory or food cache.

As with most mammals, foxes have developed an elaborate array of means to communicate with each other. Just because we don’t understand their language, doesn’t mean they don’t have one.

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For those of you who enjoy audio books, the audio version of my novel Murder Over Kodiak is now available. Check it out here. Also, you can download a freed digital version of one of my novels by watching my webinar about how I became an author and where I get my ideas for my novels.

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Robin Barefield is the author of three Alaska wilderness mystery novels, Big Game, Murder Over Kodiak, and The Fisherman’s Daughter. To download a free copy of one of her novels, watch her webinar about how she became an author and why she writes Alaska wilderness mysteries. Also, sign up below to subscribe to her free, monthly newsletter on true murder and mystery in Alaska.

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The Kodiak Red Fox

May 20, 2018Kodiak Wildlife, Red FoxKodiak red fox, red fox, Red Fox Life Cycle, Robin Barefield, Wildlife of Kodiak Islandadmin

The red fox (Vulpes vulpes) is a member of the Order Carnivora and the dog family Canidae. Red foxes occupy the largest geographic range of any member of the Carnivora, across the entire Northern hemisphere, Central America, and Asia. There are currently 45 recognized subspecies of Vulpes Vulpes, and one of these subspecies is Vulpes vulpes harrimani, the Kodiak red fox.

Red foxes are one of only six mammals native to the Kodiak Archipelago, and like most other Kodiak mammals, Kodiak red foxes are very large. They have a huge tail, coarse, thick fur on the lower back and tail, and a thick ruff around the neck and shoulders. Most Kodiak red foxes are either cross foxes with a black/brown cross on their back and shoulders, or they are a solid reddish-orange in color. Silver foxes make up a smaller percentage of the population and are striking with black fur, silver-tipped guard hairs, and yellow eyes.

Red foxes breed in February and March in Alaska. Soon after mating, the female will begin preparing a den for the arrival of her kits (babies). She may dig her own den, but often a fox just enlarges the home of a smaller burrowing animal. The litter is born after a gestation period of 51 to 54 days. An average litter consists of four kits, but litters of ten are not uncommon.

The kits open their eyes at eight to ten days after birth and leave the den for the first time at five to six weeks of age. By the time the kits are three months old, they begin to hunt on their own, and the leave their mother when they are seven months old.
In the summer, we see young foxes dart out of their dens, playing, chasing each other, and learning to hunt. Kits are curious and will often sit and watch us as we cruise past them in our boat. Even adult foxes are curious, but as they age, they learn to be wary.

Most red fox populations are considered stable. Red foxes are adaptable, and while they seem to prefer a wild setting, they can thrive even when living near urban populations.
Humans are fascinated by the beautiful, curious, intelligent red fox, and the red fox has been the subject of many songs, fables, and parables. In certain areas, foxes are trapped or shot for their furs, and in the early 1900s, fox farms, to supply pelts, were established on many of the small islands around the Kodiak Archipelago and off the Alaska Peninsula.

In addition to man, red foxes have several other natural enemies, including wolves coyotes, lynx, wolverines, and possibly bears. Eagles may prey on young foxes. The mite Sarcoptes scabiei causes mange in red foxes, resulting in hair loss, wasting and death. In the wild, red foxes live about five years, but in captivity, they may live as long as fifteen years.

We often see red foxes on the beaches at low tide, feeding on mussels, starfish, sea urchins, worms, and other intertidal animals. Foxes are a part of the Kodiak landscape, and I smile whenever I spot one.

Next week, I’ll tell you how foxes communicate with each other.

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The audiobook of Murder Over Kodiak is now available, and you can buy it here. If you want a free digital copy of one of my books, watch my webinar, and you can download the book for free at the end.

Please leave me a comment if you have any observations, questions, or suggestions

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The Common or True Beaver (Castor canadensis)

November 13, 2016Kodiak WildlifeBeaver, Beavers in Alaska, Beavers on Kodiak Island, Common Beaver, Mammals introduced to Kodiak Island, True Beaver, Wildlife of Kodiak Islandadmin

, True Beaver, Beavers in Alaska, Beavers on Kodiak Island, Wildlife of Kodiak Island, Mammals introduced to Kodiak Island

The common beaver or true beaver (Castor canadensis) is native to North America and is found in most areas from the Arctic to northern Mexico. C. canadensis is absent from Southern California, Nevada, most of Florida, and parts of Alaska. Beavers are not native to Kodiak Island but were introduced to Kodiak in 1925.

Description

The true beaver is the largest rodent in North America and the second-largest rodent in the world. The South American capybara is the largest. Beavers continue to grow throughout their lives and may reach a length of 3 to 4 feet (0.9-1.2 m), including the tail. Most adults weigh between 40 and 70 lbs. (17-32 kg), but they can weigh as much as 100 lbs. (45 kg).

A beaver has a heavy, thick, chestnut-brown coat and a warm, soft underfur that keeps it comfortable in all temperatures on land and in the water. This warm, soft fur was in such high demand by humans in the late 1800s and early 1900s that by 1930, beavers had been trapped nearly to extinction in many areas.

The beaver’s scientific name is derived from castoreum, a strong smelling, oily substance secreted by castor glands at the base its tail. A beaver uses its feet to comb this oil through its fur to provide a waterproof barrier that keep its skin dry underwater. It also has a thick layer of fat beneath its skin to insulate it in cold water.

A beaver’s body is adapted to a life spent mostly in the water. In addition to the castoreum which keeps its skin dry underwater, it has nictitating membranes that protect its eyes underwater and nose and ear valves that close when it submerges. It can cut and carry wood underwater without getting water in its mouth by tightly closing its loose lips behind its protruding front teeth. A beaver has large, webbed feet and a broad, black tail that is approximately 10 inches (25 cm) long and 6 inches (15 cm) wide that it uses as a rudder when swimming. It also uses its tail as a warning signal when it slaps it against the water. When it stands on its hind legs to cut down a tree, the tail serves as a fifth leg and helps to balance the animal. A beaver can stay underwater for fifteen minutes, and it can swim up to 5 mph (8 km/h). It propels itself through the water with its webbed hind feet while holding its front feet against its body. When swimming at the surface, only its head is visible above water. On land, a beaver moves with a waddling gait and can run between 6 and 8 mph (9.7-12.9 km/h).

Dams

Beavers are second only to humans in their ability to alter the environment for their own needs. Beavers spend part of their time on land of the rest of their time in the water. They must build their dens in an area that provides 2 to 3 feet (0.6-0.9 m) of water year-round to ensure that ice does not block the underwater entrance to their lodge or den in the winter. In areas where the natural water level is less than 2 ft. (0.6 m), beavers construct dams to increase the height of the water level. The height of an average dam is 6 ft. (1.8 m), producing an average water depth of 4 to 6 ft. (1.2 to 1.8 m). Beavers construct the dam by first diverting the stream to reduce the flow of water at their building site. Next, they drive branches and logs into the mud of the stream bed for the base. They then use whatever they can find, including sticks, bark, rocks, mud, and grasses to build the superstructure of the dam. They even include spillways and passageways in the dam structure to allow excess water to drain off the dam without damaging it. A beaver can move building materials that weigh as much as it does, and it can cut down a tree with a 6-inch-diameter (15.2 cm) trunk in 20 minutes. It may work alone to build a dam, or several family members may work together on the project.

Dens

Beavers build two different styles of dens, depending on the current and water level of the river. Both types of dens have at least one exit to deep water that will remain free of ice in the winter. In a swiftly flowing river with a year-round water level deep enough so that a dam is not required, beavers build simple bank dens into the side of the riverbank. They cover the top of a bank den with sticks, mud, and other debris. Bank dens usually have several entry tunnels. The interior of a bank den has one chamber that is approximately 2 ft. (.61 m) wide by 3 ft. (.9 m) long by 3 ft. (.9 m) high.

The second type of beaver den is called a “lodge.” A lodge is dome-shaped and is about 10 ft. (3 m) high by 19.6 ft. (6 m) wide at the base. Beavers build lodges in slow-moving water and use the same construction techniques they employ when building a dam. The lodge consists of an entry tunnel and two chambers. The entry tunnel is below the water level, and the floor of the first chamber is a few inches above the water line. The first chamber is used as an eating area and a place to dry off after getting out of the water. The floor of the second chamber is above the first chamber, and this area is used for sleeping and caring for the kits. Beavers cover the floor of this chamber with shredded wood or vegetation. A single family group, including an adult pair, this year’s kits, and the young from the previous year, occupy a lodge. The older offspring assist their parents in maintaining the lodge and the dam.

Beavers use the same lodge for many years, and since they add material to the lodge every year, the lodge grows over time. Beavers do no hibernate in the winter but stay active in their lodges. Since the only entrance to the lodge is underwater, they are frozen in the lodge or under the surface of the water if the river develops an ice layer. To prepare for winter, they store enough food to make it until spring. The walls of the lodge freeze in the winter, helping to insulate the interior and protecting them from predators.

Diet

Beavers do not eat wood, they eat the cambium, a soft tissue near the surface of the tree from which new wood and bark grow. They also eat aquatic plants and roots and grasses. During the winter, they mainly depend on woody material such and shrubs and branches, which they plant underwater close to the lodge entrance. When they deplete the food supply near their den, they must forage further from home for food, and this increases their risk from predators. When they no longer have a good supply of food near their den, they migrate to a new home.

Behavior

Beavers are mostly nocturnal. They sleep during the day and forage for food and build their dams and dens at night. They communicate mainly by posturing and scent marking. They use their paddle-like tail to slap the water as a warning and to communicate other emotions. They build small, dome-shaped mounds and rub castoreum, the oily substance secreted by their castor glands, on the mounds to mark their territory. Young beavers make a sound like a quacking duck, and adult beavers sometimes grunt when they work.

Reproduction

There are no separate names for male and female beavers, but babies are called kits. Beavers are monogamous and mate for life, but if one of the mates dies, its partner may find another mate. They breed in January and February, and females give birth to between one and nine (two to four are average) kits between late April to June, after a gestation of 105 days. Kits are covered with a soft fur at birth. They can swim when they are four-days-old, and they can dive by the time they are two-months-old. Young beavers live with their parents until they are two-years-old, and they reach adulthood in their second winter. Beavers survive in the wild for approximately 10 to 12 years, but in captivity, they have been known to live as long as 19 years.

Impact on Environment

When beavers colonize an area, they can impact the environment in both positive and negative ways. When they build a dam on a river or stream, they create ponds by flooding the area near the dam, and this increases the water table in the area and recharges aquifers. Beaver dams can also create wetlands where there were none before, providing a habitat for birds, invertebrates, fish, and mammals. On the negative side, beaver dams can cause flooding of crops and roads, damage dams and roads built by humans, harm forests and landscaping, negatively impact plants and animals, dam irrigation canals and prevent necessary water from flowing to farmlands, and spread diseases such as Giardia to the drinking water supply. In Alaska, beaver dams sometimes cause floods during the spring ice break-up on rivers and streams, and dams that block a stream can disrupt the salmon migrating to spawn in that stream.

Writing Projects

April 17, 2016Kodiak Wildlife, WritingWildlife of Kodiak Island, Writing, Writing Projects for Robin Barefieldadmin

Last week I posted that my novel, Murder Over Kodiak, is being re-released, and this week I’ll tell you about my current writing projects. As I mentioned recently, I never have enough time to get everything done, and sometimes it seems as if I never complete anything. I am guilty of tackling massive projects with no end in sight, and then I start something new before I complete the first project. I am presently working on a technical non-fiction book, a cookbook, and a novel. I also write this weekly blog and a monthly newsletter. I’m not a patient person, so I would love to finish all these projects by next week. I know, though, that writing a book is a long, slow process, and once I finish the rough draft, it needs to be edited, re-edited, and edited several more times again.

Six years ago, I started writing about the animals of Kodiak Island, species by species. My original plan was to post the information on our Munsey’s Bear Camp website, and I have been doing that, but it occurred to me a few years ago that if I put all this information together, I would have an interesting guide book. Since then, I’ve been compiling a rough draft along with photos. I find researching this book interesting, but writing it is hard work, and it moves forward at a snail’s pace. Each fact must be attributed to its source, and too often, the sources do not agree with each other, so I must research other sources until I’m satisfied I’ve reported the best information available. I plan to cover the mammals endemic to Kodiak Island. These are the Kodiak Bear, the little brown bat, the short-tailed weasel, the tundra vole, the red fox, and the river otter. I’ll also detail some of the introduced mammals, including Sitka black-tailed deer and mountain goats, and I’ll cover marine mammals, including harbor seals, Stellar Sea Lions, sea otters, porpoises, and whales. In addition to mammals, I want to include a few birds, such as bald eagles, puffins, oyster catchers, and arctic terns. I still have quite a bit of work to do on the book, but it is beginning to take shape. Many of my blog posts about wildlife are a product of the research I’ve done for this book.

My second book project is a cookbook that my friend, Marcia, and I are working on with Mike’s mother, Pat, and Mary Schwarzhans. Marcia was the cook at our lodge for many years, and Mary is our current cook. Marcia is the driving force behind this project, and I feel as if she has done most of the work on it so far. Little by little this project is also taking shape, though. Marcia has a vision of what the book should look like, and when she talks about it, I get excited. In addition to being a cookbook, it will tell the history of Munsey’s Bear Camp with short stories, and we also hope to give the reader a feel for what it has been like over the years to cook at a remote Alaskan Lodge. Our working title for this book is Tales from the Kitchen at Munsey’s Bear Camp.

Book number three is my next novel. I love writing fiction, and this is my project of choice. To write fiction, though, I need a large chunk of uninterrupted time, so I can let my imagination roam, and those chunks of time are difficult to find. I hope to spend more time on this project over the next few months. Next week, I’ll post an excerpt from the prolog of this novel. Its working title is The Fisherman’s Daughter, and as with my last novel, it will be set on Kodiak Island.

My blog is fun, but it takes time. So far, I’ve had plenty of ideas for posts, but I worry that won’t last. My Mystery Newsletter profiles a different Alaskan crime or criminal each month, and it is a great deal of work, but I find it fascinating as well as disconcerting and creepy. I’ll write more about my newsletter in two weeks.

Speaking of my newsletter, I just sent out the latest edition. If you are signed up for it but didn’t receive it, check your spam filter. If you would like to receive my newsletter, go here to sign up, and I’ll send it to you. As always, let me know if there is anything about Kodiak Island you’d like me to write about on my blog, and I’ll do my best to fulfill your request!

Sea Otters Part 3

February 21, 2016UncategorizedNorthern Sea Otter, sea otter, Sea otter biology, Sea otters in Alaska, Sea Otters near Kodiak Island, Wildlife of Kodiak Islandadmin

A sea otter has a loose pouch of skin under each foreleg where it can store food as it’s collected. When the otter returns to the surface, it can rest on its back and leisurely retrieve one piece of food after another from its pouch. In addition to food, the sea otter also stores a rock in one of its pouches. The otter may use the rock under water to pry loose mussels or other attached bivalves or to dislodge sea urchins wedged in crevices. When floating on the surface, the otter places the rock on its chest and pounds crabs, snails, clams, and other prey against the rock to break through the tough shells. Sea otters are one of the few animals other than humans known to use tools.

Mating can occur at any time of the year for sea otters, and while the young may be born in any season, most pups in Alaska are born in the spring. As with bears, when a sea otter becomes pregnant, the implantation and development of the embryo often stops, and the embryo may not implant for several months. Scientists believe the purpose of delayed implantation in sea otters is to allow for the birth of pups when environmental conditions and food supplies are most favorable. Sea otters are pregnant for four months, but because the length of the delayed implantation varies so greatly, the gestation period may last from four to twelve months.

Sea otter mothers are normally very attentive, affectionate, and protective of their pups. A pup spends most of its time riding on its mother’s belly, and even pups six-months of age or older and nearly as large as their mother will climb on her stomach as she appears to struggle to keep her head above water.

In addition to cradling her pup on her chest to keep him warm, a mother meticulously grooms her pup’s fur until the pup is three to four months old and able to groom himself. At this age, the pup is also able to swim on his back and dive with ease. The mother teaches the pup how to catch and eat prey, and by the time the pup is six months old, he can capture and break open his own prey. Sea otter pups remain with their mothers anywhere from three to twelve months.

Sea otters often float together in large groups called rafts. Except for territorial males who rest with female groups, most rafts are comprised of individuals of the same sex, and mothers with pups often rest together in nursery groups. Rafts usually consist of between ten and more than one-hundred otters, but in Alaska, rafts with 2000 individuals have been reported.

Sea otters are considered a “Keystone” species, meaning that they effect the ecosystem to a much greater degree than their numbers would suggest. Sea otters protect kelp forests by eating herbivores such as sea urchins that graze on the kelp. In turn, the kelp forests provide food and cover for many other species of animals, and kelp forests play an important role in capturing carbon and reducing atmospheric carbon dioxide levels.