Thick-Billed Murre

 

Uria lomvia

Thick-billed and thin-billed murres rest on a rock in the sun on Gull Island in Alaska. Thick-bills are recognizable not just by their slightly heavier bills but also by the white line down the sides of the bill.

Photograph by Michael Melford

The thick-billed murre swims far better than it flies. Takeoff is awkward, but once it's airborne, it can fly at about 75 miles an hour (120 kilometers an hour). Among the deepest underwater divers of all birds, it uses its stubby wings to "fly" through the water, routinely reaching depths of more than 330 feet (100 meters)—sometimes even twice that—in pursuit of the fish, squid, and crustaceans it feeds on.

Covered in black feathers on its head, back, and wings and white feathers on its breast and underside, this waterbird can be found in and around Arctic waters. In the summer it breeds off the rocky coasts of Alaska, Canada, Greenland, Scandinavia, and Russia. But in winter—when it's not breeding—the thick-billed murre is at sea, off the edge of open ice southward to Nova Scotia and northern British Columbia. It also winters off the coasts of Greenland, northern Europe, and southward in the Pacific Ocean to northern Japan.

The thick-billed murre doesn’t build nests. Instead, the female joins others of her species in a large, noisy colony and lays a single egg on a narrow cliff ledge. She then arranges pebbles and other debris close to the egg, cementing them with feces to form a support that prevents the large egg from rolling off the ledge if it dislodges. The egg hatches in 30 to 35 days. Both parents feed the chick, caring for it until it fledges at about 21 days old. At this time, chicks make a migratory journey that is unique among birds, swimming as far as 620 miles (1,000 kilometers) in the first leg to their wintering grounds off the coast of Newfoundland.

Rad full here... http://animals.nationalgeographic.com/animals/birds/murre/

Canvasback

 

Aythya valisineria

Canvasbacks are diver ducks well equipped with their own form of flippers—large webbed feet that make them smooth and graceful swimmers.

Photograph by Jac6.Flickr, Flickr

Canvasbacks are diver ducks well equipped with their own form of flippers—large webbed feet that make them smooth and graceful swimmers. They spend much of their time in the water and use their long bills to feed by digging through bottom sediments in search of aquatic plant stems and roots, or submerged insects, crustaceans, and clams.

On land, canvasback movements are clumsy and the ducks seldom stray too far from the water’s edge. But when “cans” take to the air they can cover a lot of ground.

Each year when winter weather begins to chill northern lakes, ponds, and prairie wetlands, the canvasbacks’ food becomes scarce and the ducks take flight in enormous flocks. Thousands of birds migrate together each year to traditional wintering sites like the Chesapeake Bay, San Francisco Bay, Gulf Coast, and Mexico. The majority of North American canvasbacks breed in the Prairie Pothole wetlands and migrate via the Mississippi Flyway to the Mid-Atlantic and Lower Mississippi Alluvial Valley, or along the Pacific Flyway to the California coast.

The Chesapeake Bay’s Susquehanna Flats area was once the winter home of perhaps half of the North American canvasback population. But the shoals’ lush beds of wild celery have declined with compromised water quality and increased sedimentation. Chesapeake canvasback numbers followed suit and have declined some 80 percent over the last 50 years.

Rad full here.... http://animals.nationalgeographic.com/animals/birds/canvasback/

Steller's Sea Eagle

 

Haliaeetus pelagicus

Holding its prey down with powerful talons, a Steller's sea eagle displays its wings, which can have a span of over 6 feet (2 meters).

Photograph by Tim Laman

These very large, powerful eagles are also striking in appearance. They are dark but dramatically colored with white tail, shoulders, rump, thighs and forehead.

These eagles are believed to breed only in far eastern Russia, along the coasts and surrounding islands of the Sea of Okhotsk and Bering Sea. They are most common on the Kamchatka Peninsula.

Each winter, many Steller's sea eagles migrate from their breeding grounds to Japan, and a few reach Korea or even farther afield. Other individuals do not migrate, but simply move to open water as winter approaches.

Open water provides these eagles with their main food sources along coastlines and lakes. In their breeding grounds, Steller's sea eagles subsist largely on salmon, and they both hunt and scavenge for this resource. Annual salmon runs provide an enormous bounty and Steller's sea eagle nests are typically located near coasts and rivers where these fish appear en masse.

These birds of prey hunt from a perch or from flight by diving and clutching prey in their talons. They also stand in shallow water or on the ice and grab passing fish when the opportunity arises. Like other eagles, Steller's also steal food from other birds.

In Japan, Steller's sea eagles feast on cod. In addition to fish, they eat crabs, shellfish, squid, small animals, ducks, gulls, and carrion.

Read full here... http://animals.nationalgeographic.com/animals/birds/stellers-eagle/