|A globular mass of wood frog eggs deposited|
in the shallow end of a wooded pool. The mass
is approximately fist-sized and appears to be a
few days old due to its swollen appearance.
Tuesday, March 15, 2011
Spring Unofficially Begins
The first wood frog (Rana sylvatica) activity of the season was observed this past Saturday at a small wooded pool in Mead Township as temperatures climbed into the low 60's. The arrival of wood frogs is usually a good indication of winter's demise along with bluebirds, coltsfoot and red-winged blackbirds. The next 60 degree day could bring out the first chorus frogs (peepers). Wood frogs can be tricky to locate due to their weak vocalizations which are barely audible 100 ft from pools in quietest conditions. Breezy conditions like those of this past Saturday can easily drown out a chorus at short distances. Wood frogs are notorious for being the first frogs to breed in late winter in eastern Ohio often arriving poolside by the dozens then disappearing into the surrounding woods before most other species begin chorusing. A large pool with a good population can yield 20-30 clutches of eggs per season with 300-500 eggs per clutch.