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/

Mallard Duck

 

Anas platyrhynchos

Male mallards, or drakes, are more distinctively colored than females, who are mottled brown with a flourish of iridescent purple on their wing feathers.

Photograph by Bates Littlehales

The green head and yellow bill of the mallard duck is a familiar sight to many people living in the Northern hemisphere. In fact, the mallard is thought to be the most abundant and wide-ranging duck on Earth.

Mallards prefer calm, shallow sanctuaries, but can be found in almost any body of freshwater across Asia, Europe, and North America. They’re also found in saltwater and brackish water and are commonly found in wetlands.

The male, or drake, is the more distinctively colored of the mallards. Its iconic green head sits atop a white neckband that sets off a chestnut-colored chest and gray body. Females are mottled drab brown in color, but sport iridescent purple-blue wing feathers that are visible as a patch on their sides. They grow to about 26 inches (65 centimeters) in length and can weigh up to 3 pounds (1.4 kilograms).

Mallard groups can often be seen head dipping or completely upending in the water. They rarely dive though, spending their time near the surface and dabbling for invertebrates, fish, amphibians, and a variety of plants. They also graze on land, feeding on grains and plants.

Mated pairs migrate to and breed in the northern parts of their range and build nests on the ground or in a protected cavity. They normally lay about a dozen eggs, and the incubation period lasts just under a month. Mallards are territorial during much of this period, but once incubation is well underway, males abandon the nest and join a flock of other males.

Read full here... http://animals.nationalgeographic.com/animals/birds/mallard-duck/

Canada Goose

 

Branta canadensis

Once threatened with dwindling populations, conservation efforts have made the Canada goose very common throughout North America.

Photograph by Stephen St. John

The ubiquitous Canada goose is one of the best known birds in North America. It is found in every contiguous U.S. state and Canadian province at one time of the year or another.

Canada geese are adaptable to many habitats and may thrive wherever grasses, grains, or berries are available. Because of changing weather, settlement, and farming patterns, many Canada (not "Canadian") geese have begun to alter their migrations. Typically, the birds summered in northern North America and flew south when cold weather arrived. This cycle endures, but some northern populations have shortened their flight to traditional wintering grounds in the southern U.S. and Mexico. Other Canada geese have become permanent residents of parks, golf courses, suburban subdevelopments, and other human habitats across much of North America. In some areas, such as airports, they are so numerous that they are considered a nuisance. Just 50 geese can produce two and a half tons of excrement in a year.

When the birds do migrate, they form impressive and aerodynamic "V-formations." They can cover 1,500 miles (2,400 kilometers) in just 24 hours with a favorable wind, but typically travel at a much more leisurely rate. These noisy groups honk their way along established paths that include designated "rest stops." These social birds remain in flocks year-round, except while nesting.

Link: http://animals.nationalgeographic.com/animals/birds/canada-goose/