Rhythmic Croaking of Frogs Heard on New CD

(AP Photo/Nevada Appeal, Brad Horn) :: A frog sits in a pond near the ninth green at Genoa Lakes Golf Club in Genoa, Nev., while a dragonfly hovers on Tuesday, July 22, 2008.

By Associated Press
Updated: 8/4/2008

LINCOLN, Neb.

An animal expert at the University of Nebraska-Lincoln has released a CD of the rhythmic stylings of Nebraska's native frogs.

Herpetologist Dennis Ferraro says frog songs are all about attracting a mate. Male frogs produce a simple bass line to say they're in their own territory and a higher-pitched melody to coax females to come over. Female frogs don't make the sounds.

Ferraro's CD, ''Frog Calls of Nebraska,'' features 11 tracks, each about one and half to 2 minutes long. The CD is on sale at Nebraska Maps and More on campus.

Ferraro says listening to frog calls helps scientists track populations.

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