Mountain Bluebird, Male, Lake Peak, Sangre de Cristo Mountains, New Mexico, July 14, 1953

Mountain Bluebird, Male, Lake Peak, Sangre de Cristo Mountains, New Mexico, July 14, 1953

Blackpoll Warblers, Male and Female, East Inlet, Pittsburg, New Hampshire, June 29, 1965

Osprey, Penobscot Bay, Maine, July 1974

American Kestrel, Tesuque, New Mexico, June 28, 1958 [Falco sparverius]

Brown Creeper, Great Spruce Head Island, Maine, June 23, 1964

Western Gnatcatcher, Male, Tesuque, New Mexico, June 17, 1948

Ruby-crowned Kinglet, Male, Santa Fe Basin, New Mexico, July 1, 1954

Louisiana Waterthrush, Miami Whitewater Forest, Hamilton County, Ohio, June 2, 1963

Green Tree Frog, Homestead, Florida, February 1954

Ruffed Grouse's Nest Silver Lake, New Hampshire, June 3, 1953

Osprey, Penobscot Bay, Maine, July 1974

Mourning Cloak Butterfly, Sequence on Emergence of Adult #13, II, Tesuque, New Mexico, July 1958

Sedge Wren

Winter Wren, Great Spruce Head Island, Maine, July 18, 1969

Hurricane Clouds Blowing through Guadalupe Pass, Texas

Summer Three-awn Grasses, Alpine Meadow, Texas

Cottonwoods, Willows and New Deal Weed, Texas

South Rim Chisos Mountains, Texas

Madrone Bark, Texas