Biology

Featured Species

Common Gallinule (Gallinula galeata)

Featured Content

White-headed Woodpecker

White-headed Woodpecker (Leuconotopicus albolarvatus) is a species of the class Aves (Birds) in the family Picidae (Woodpec...

Purple Finch

Purple Finch (Haemorhous purpureus) is a species of the class Aves (Birds) in the family Fringillidae (Finches, Euphonias, ...

Painted Redstart

Painted Redstart (Myioborus pictus) is a species of the class Aves (Birds) in the family Parulidae (New World Warblers) and...

Garden Tomato

Garden Tomato (Solanum lycopersicum) is a species of the class Magnoliopsida in the family Solanaceae (Nightshades) and ord...

Eurasian Oystercatcher

Eurasian Oystercatcher (Haematopus ostralegus) is a species of the class Aves (Birds) in the family Haematopodidae (Oysterc...

Franklin's Gull

Overview The Franklin’s Gull (Leucophaeus pipixcan) is a species of gull (family Laridae) in the orde...

Recent Content

Crimson Bottlebrush

Callistemon citrinus

Williamson's Sapsucker

Sphyrapicus thyroideus

Lesser Nighthawk

Chordeiles acutipennis

Juneberry

Amelanchier alnifolia

Blue Grosbeak

Passerina caerulea

Bridled Titmouse

Baeolophus wollweberi

Gophersnake

Pituophis catenifer

Plateau Striped Whiptail

Aspidoscelis velox

Bronzed Cowbird

Molothrus aeneus

Featured Illustrations

Black-throated Tit
Black-throated Tit
Eastern Towhee
Eastern Towhee
Long-tailed Tit
Long-tailed Tit

Galleries

Gallery of Butterflies and Moths
Gallery of Butterflies and Moths
Gallery of California Plants
Gallery of California Plants
Gallery of California Wildflowers
Gallery of California Wildflowers
Gallery of Dragonflies
Gallery of Dragonflies
Gallery of Frogs
Gallery of Frogs
Gallery of Hummingbirds
Gallery of Hummingbirds
Gallery of Woodpeckers
Gallery of Woodpeckers

Lists

Birds of United States

Commonly observed birds in United States

List of Domains of Life

A list of the domains of life.

List of Kingdoms of Life

A list of the kingdoms of life.