Studying cognition in wild songbirds in the famous Wytham Woods

Moon over McPherson

Leptodactylus pentadactylus, the smokey jungle frog

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

Calling male Hyla chrysoscelis

Mating pair of Hypsiboas rufitelus at La Selva, Costa Rica

Common frog spawn in County Cork, Ireland

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

Heavy bullfrog, McPherson Pond

Protecting birdfeeders from squirrels for cognitive testing in the wild.

An amazing glass frog in Costa Rica

Mating cricket frogs, Stillwater, OK

Bullfrog in Missouri

Female Dendropsophus ebraccatus in Costa Rica

Red eyed treefrogs, Agallychnis callidryas, in Costa Rica

Toad explosion, McPherson Pond

Cruziohyla calcarifer at La Selva, Costa Rica

Grasshopper collection site in Germany

Metamorphosis

Killarney National Park, field site for songbird cognition studies

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