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