A blue tit nest, from studies of bird cognition and breeding in County Cork, Ireland

Protecting birdfeeders from squirrels for cognitive testing in the wild.

Territorial response of a male great tit to a speaker broadcasting an intruder song

Studying cognition in wild songbirds in the famous Wytham Woods

Leptodactylus pentadactylus, the smokey jungle frog

Bullfrog in Missouri

Mating cricket frogs, Stillwater, OK

Water snake at McPherson pond

Calling male Hyla chrysoscelis

Female Dendropsophus ebraccatus in Costa Rica

Metamorphosis

Killarney National Park, field site for songbird cognition studies

Mating pair of Hypsiboas rufitelus at La Selva, Costa Rica

Moth, Stillwater, OK

Cantarrana (singing frog) swamp, La Selva, Costa Rica

Cruziohyla calcarifer at La Selva, Costa Rica

Red eyed treefrogs, Agallychnis callidryas, in Costa Rica

Toad explosion, McPherson Pond

Common frog spawn in County Cork, Ireland

Grasshopper collection site in Germany

Heavy bullfrog, McPherson Pond

Moon over McPherson

An amazing glass frog in Costa Rica