Golden-crowned Kinglet, Seney, Michigan, June 25, 1973

Golden-crowned Kinglet, Seney, Michigan, June 25, 1973

Wilson's Warbler, Male, East Inlet, Pittsburg, New Hampshire, June 27, 1965

Purple Gallinule, Everglades National Park, Florida, February 16, 1954

Bluebird, Female, Battle Creek, Michigan, June 24, 1947

Sanderlings, Sanibel Island, Florida, January 1974

Mayfly Nymph and Macronema, Nambe River, New Mexico, July 1958

Telea Polyphemus Larva, About 4 Weeks Old, Molting Sequence 1, #8, Tesuque, New Mexico, August 1960

Killdeer, Union City, Michigan, June 12, 1947

Northern Pileolated Warbler, Male, Brainard Lake, Colorado, July 6, 1961

Hooded Warblers, Male and Female, Kanawha State Park, West Virginia, June 9, 1971

Hooded Warblers, Male and Female, Kanawha State Park, West Virginia, June 9, 1971

Western Palm Warbler, Male, Seney, Michigan, June 16, 1955

Cape May Warbler, Male, Ely, Minnesota, June 28, 1961

Connecticut Warbler, Female, Ely, Minnesota, July 4, 1962

Connecticut Warbler, Female, Ely, Minnesota, July 4, 1962

Blue-winged Warbler, Male, Bird Haven, Jackson, Michigan, June 10, 1960

Olive Warbler, Female, Chiricahua Mountans, Arizona, June 9-10, 1959

Golden-winged Warblers, Male and Female, Bird Haven, Jackson, Michigan, June 9, 1960

Golden-winged Warbler, Bird Haven, Jackson, Michigan, June 9, 1960