FEMALE CONCAVE EARED FROGS DRAW MATES WITH ULTRASONIC CALLS
May 12, 2008
May 12, 2008
CHAMPAIGN, Ill., May 12 -- The University of Illinois at Urbana-Champaign issued the following news release:
Most female frogs don't call; most lack or have only rudimentary vocal cords. A typical female selects a mate from a chorus of males and then - silently - signals her beau. But the female concave-eared torrent frog, Odorrana tormota, has a more direct method of declaring her interest: She emits a high-pitched chirp that to the human ear sounds like that of a bird.
Most female frogs don't call; most lack or have only rudimentary vocal cords. A typical female selects a mate from a chorus of males and then - silently - signals her beau. But the female concave-eared torrent frog, Odorrana tormota, has a more direct method of declaring her interest: She emits a high-pitched chirp that to the human ear sounds like that of a bird.