Bald eagles
Known for its white head and yellow beak, the bald eagle is the emblem bird of North America. Once close to disappearing, it is one of the best-known conservation success stories.
- Envergadura
- 1,8–2,3 m
- Peso
- 3–6,5 kg
- Longevidade na natureza
- 20–30 anos
- Estado de conservação (UICN)
- Pouco preocupante (LC)
Valores aproximados para adultos; variam com o sexo, a subespécie e a população.
Num relance
Os factos principais sobre Águias-carecas.
- Where does it live?It lives in North America, from Alaska and Canada to northern Mexico.
- What does it eat?Its main food is fish, which it snatches from the water's surface with its talons.
- Behaviour and social lifeBald eagles usually stay with the same mate for many years.
- ChicksThe female usually lays 1–3 eggs, and both parents incubate them and feed the chicks.
Em detalhe
Em resumo
- The bald eagle lives only in North America and is the national bird of the USA.
- Its white head feathers appear with maturity at around 4–5 years old.
- Its main food is fish.
- It builds some of the largest nests of any bird.
- Its numbers recovered after the pesticide DDT was banned and the species was protected.
The bald eagle (Haliaeetus leucocephalus) is a large bird of prey easily recognised by its white head and tail, dark brown body and big yellow beak. Despite its name, its head is not bald; in older English "bald" also meant "white".
Where does it live?
It lives in North America, from Alaska and Canada to northern Mexico. It usually prefers wooded areas near large lakes, rivers and coasts, and needs big trees for nesting.
What does it eat?
Its main food is fish, which it snatches from the water's surface with its talons. It also eats waterbirds, small mammals and carrion. Sometimes it steals fish caught by other birds.
Behaviour and social life
Bald eagles usually stay with the same mate for many years. Pairs build huge nests and add to them every year. In winter, large numbers of eagles can gather near open water where fish are available.
Chicks
The female usually lays 1–3 eggs, and both parents incubate them and feed the chicks. Young eagles are dark brown; the white head and tail feathers appear with maturity.
Conservation status
The bald eagle is listed as Least Concern (LC) on the IUCN Red List. In the mid-20th century the pesticide DDT thinned eggshells and severely reduced breeding, bringing the species close to disappearing in many areas. After DDT was banned and the eagle was legally protected, populations recovered strongly.
Fun facts
- Bald eagle nests are among the largest known bird nests; some weigh more than a tonne.
- Its sharp eyes can spot fish from a great distance.
- The powerful "eagle scream" in films often belongs to another bird; the bald eagle's call is thinner and more twittering.
Animais semelhantes
Outros animais do mesmo grupo.
Respeito pela natureza, amanhãs mais fortes
Proteger a vida selvagem é responsabilidade de todos.
Se encontrar um animal selvagem ferido ou uma cria, não lhe toque e avise a autoridade local de conservação da natureza. Mais conhecimento, mais consciência.
- Respeite os habitats naturais
- Observe os animais à distância
- Não deixe lixo na natureza
- Apoie um futuro sustentável
