Alaska – a state usually associated with ice, snow, and cold. The winters
are long and dark, with only a few hours of sunlight each day, while the
summers are cool and bright, the sun barely dipping below the horizon at night.
Although such a climate might seem harsh and unforgiving to some of us, there
are plenty of animals that call Alaska home – including the Alaskan state bird,
the Willow Ptarmigan (Lagopus lagopus).
Young male Willow Ptarmigan in summer plumage (photo: the wikipedia files)
A member of the game bird
order (turkey, quail, grouse, chickens), the Willow Ptarmigan is a species that
thrives in cold, northern climates. In fact, its scientific name, Lagopus
lagopus, literally translates to
“hare-footed,” a reference to its feather-covered feet, which help to keep the
bird warm in sub-zero temperatures. Alaskan weather isn’t always snowy, though.
The summers in parts of Alaska can actually get quite warm, with temperatures
in the 70’s (Fahrenheit). To successfully camouflage themselves in both
seasons, Willow Ptarmigans have plumage that changes with the season. In the
summer, their feathers will be brown with a hint of red, sporting a black tail
and white underbelly. During the winter, however, their plumage becomes mainly
white with the occasional black feathers.
Willow Ptarmigan in winter plumage (some become totally white) (photo: the Wikipedia files)
As the plumage of these
birds is affected by the season, so is their diet. Willow Ptarmigans feed on
low shrubs and, as their name suggests, willow trees. In the summer, the
Ptarmigans will eat leaves, berries, flowers, and seeds. The winter months of
course bring snow, which limits their diet.
Heavy snowfall can cover shorter shrubs, preventing the Willow Ptarmigans from
getting to the buds that comprise much of their winter diet. Fortunately in
these cases, the Ptarmigans can still access the buds of the Alaska willow.
Willow Ptarmigan chicks (photo: the wikipedia files)
Willow Ptarmigans also
make good parents. They are the only species of grouse in which the male helps
to raise the chicks until they are independent. Most male birds of the world are
monogamous, remaining with one mate for the entirety of the breeding season,
and are extremely protective of territory, nest site, and mate. Despite such
devoted parents, life as a chick is dangerous, and less than a third of the
young will survive their first year. Not to worry, though. The
Willow Ptarmigan is a common and widespread species, in no current danger of
extirpation or extinction.
At the World Bird Sanctuary we have a few of our own northern, cold-weather species. Next time
you are visiting, keep an eye out for our Snowy Owl and Rough-legged Hawk.
They’ll be happy to teach you a thing or two about surviving the cold of
winter.