National Geographic : 1950 Apr
© National Geographic Society + Camouflage Protects a Singing Tree Toad; Spring Peeper Trills Unabashed on a Pencil Lichenlike markings of the Common Tree Toad (Hyla versicolor) suggest a piece of bark. His call is louder and more distinct than the Common Toad's. A familiar springtime sound in eastern North America is the din of a chorus of Peepers (Hyla crucifer) in full voice. Volume of these tailless amphibians is out of all proportion to their size. Kodachromes by Arthur A. Allen + The Small Southern Tree Frog Climbs and "Barks" Like a Gray Squirrel Mate-calling at night by a roadside pond (right), he puffs himself into a brown ball and sounds like a duck. By day he appears slender and green. After the mating season he takes to the trees and makes squirrel-like noises. Scientists call him Hyla squirella; laymen, the Squirrel Tree Frog. One at left returned to his holly-leaf home daily.