Ernie Janes / Bald eagle (Haliaeetus leucocephalus) portrait, captive, occurs in North America.

Danny Green / Bald eagle (Haliaeetus leucocephalus) in flight, Alaska, USA, February

Danny Green / Bald eagle (Haliaeetus leucocephalus) in flight, Alaska, USA, February

Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) in flight over snow, Hokkaido, Japan, February

Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) flying past snowy mountain peak, Hokkaido, Japan, February

Markus Varesvuo / Steller's Eagle (Haliaeteus pelagicus) flying, with black background, Hokkaido, Japan, February

Tony Heald / Bateleur Eagle (Terathopius ecaudatus) female, stretching wings Kgalagadi Transfrontier Park, South Africa. January

Franco Banfi / Manta ray (Manta birostris), San Benedicto, Revillagigedo (Socorro) Islands, Mexico, East Pacific Ocean

Diane McAllister / Bateleur eagle (Terathopius ecaudatus) perched in tree, Tanzania, Africa.

Jeff Rotman / Spotted eagle ray (Aetobatus narinari), underside, Natal Coast, South Africa.

Pete Oxford / Black-chested Buzzard-Eagle (Geranoaetus melanoleucus) juvenile, Podocarpus National Park, Ecuador

Wild Wonders of Europe / Shpilenok / Two Steppe eagle (Aquila nipalensis) chicks in their nest. Cherniye Zemli (Black Earth) Nature Reserve, Kalmykia, Russia, May 2009 Wild Wonders kids book.