In Tanzania's northern Serengeti, a spotted hyena holds its ground against a mob of white-backed vultures, hooded vultures, and marabou storks competing for the same meal.

Song Sparrows take singing so seriously that researchers use them to study human language. One of North America's most common birds, they are a reminder that there is beauty in the ordinary.

A Great Blue Heron wades in the shadow of cypress trees and Spanish moss in Louisiana's Atchafalaya Basin, with morning light glowing beyond.

Cape Buffalo, like this one in Kenya's Masai Mara, are famously short-tempered, yet tolerate the Yellow-billed Oxpecker riding along, picking ticks and cleaning wounds.

A Little Blue Heron works the top of a weathered snag along a roadside wetland in Belize, stepping carefully back and forth in search of a foothold.

A Great Egret in breeding plumage grooms at its evening roost, framed by the branches of an evergreen.

This African Jacana, whose disproportionately large feet let it walk across floating lily pads, comes in to land along Botswana's Chobe River.