White-tailed eagle in the context of "Raptor (bird)"

Bird wings are paired forelimbs in birds, which evolved specialized feathers to generate lift and thrust and allow the birds to fly.

Terrestrial flightless birds have reduced wings or none at all (for example, moa). In aquatic flightless birds (penguins), wings can serve as flippers.

The bald eagle (Haliaeetus leucocephalus) is a bird of prey found in North America. A sea eagle, it has two known subspecies and forms a species pair with the white-tailed eagle (Haliaeetus albicilla), which occupies the same niche as the bald eagle in the Palearctic. Its range includes most of Canada and Alaska, all of the contiguous United States, and northern Mexico. It is found near large bodies of open water with an abundant food supply and old-growth trees for nesting.

The bald eagle is an opportunistic feeder that subsists mainly on fish, upon which it swoops down and snatches from the water with its talons. It builds the largest nest of any North American bird and the largest tree nests ever recorded for any animal species, up to 4 m (13 ft) deep, 2.5 m (8.2 ft) wide, and 1 metric ton (1.1 short tons) in weight. Sexual maturity is attained at the age of four to five years.

The Ropotamo (Bulgarian: Ропотамо [ropoˈtamo], from the Ancient Greek word Ροπόταμος ropotamos meaning "border river") is a river in south-eastern Bulgaria. It takes its source from the Bosna Ridge in the Strandzha Mountains, running for 48.5 km to empty into the Black Sea near Cape Saint Demetrius between Dyuni and Primorsko.

The river is most often noted for its 30 m-wide mouth that is home to an abundance of flora species, over 100 of which endangered in the country. The lower section of the river is a protected area since 1940 and forms part of the Ropotamo Reserve. The lower Ropotamo is a popular tourist attraction because of the water lilies and the rock formations above the river, on some of which white-tailed eagles nest.

National symbols of Poland (Polish: Polskie symbole narodowe) are the tangible and intangible symbols, emblems or images that are found in Poland to represent the country's unique customs, traditions, cultural life, and its over 1000-year history. These symbols serve as the nation's portrayal of patriotism and dedication to their national identity. The Polish people and the Polish diaspora around the world take great pride in their native country, and associate themselves with the colours white and red. The expression biało-czerwoni ("whitereds") is widely used by Poles when referring to their compatriots. A crowned white-tailed eagle on a red shield or background has been Poland's national symbol and coat of arms since the Middle Ages. Other unofficial symbols feature visual personifications, music of Chopin, polonaise and mazurka dances, animals such as the European bison or the white stork, apples, red poppy flowers and religious insignia of the Roman Catholic church. Several have been popularised in recent years, notably the winged hussars.