Tim Laman / A Bald eagle (Haliaeetus leucocephalus) at the Lower Klamath section of the refuge with Tundra swans / Whistling swans (Cygnus columbianus) in the background. Tule Lake National Wildlife Refuge, Calif...

Gerry Ellis / Long-crested Eagle (Lophaetus occipitalis) perching in Whistling Thorn (Acacia drepanolobium) acacia tree Serengeti National Park, Tanzania

Yva Momatiuk & John Eastcott / Whistling Kite (Haliastur sphenurus) group and Black Kite (Milvus migrans) in tree, Queensland, Australia