Heavy bullfrog, McPherson Pond
Moth, Stillwater, OK
Mating pair of Hypsiboas rufitelus at La Selva, Costa Rica
Territorial response of a male great tit to a speaker broadcasting an intruder song
Cantarrana (singing frog) swamp, La Selva, Costa Rica
Killarney National Park, field site for songbird cognition studies
Calling male Hyla chrysoscelis
Deer skeleton, McPherson Pond
Cruziohyla calcarifer at La Selva, Costa Rica
Mating cricket frogs, Stillwater, OK
A blue tit nest, from studies of bird cognition and breeding in County Cork, Ireland
Moon over McPherson
Grasshopper collection site in Germany
Leptodactylus pentadactylus, the smokey jungle frog
Protecting birdfeeders from squirrels for cognitive testing in the wild.
Bullfrog in Missouri
Toad explosion, McPherson Pond
Metamorphosis
Female Dendropsophus ebraccatus in Costa Rica
Studying cognition in wild songbirds in the famous Wytham Woods
Water snake at McPherson pond
Red eyed treefrogs, Agallychnis callidryas, in Costa Rica
An amazing glass frog in Costa Rica
Common frog spawn in County Cork, Ireland
