The baritone call of the bullfrog is so deep and resonant, it resembles the mooing of a cow, hence its name. Only males emit this trademark "jug-o-rum" bellow, and their choruses can be heard during ...
Sidney Woodruff of UC Davis holds a northwestern pond turtle at a field site in Yosemite. (Courtesy Sidney Woodruff) The call of American bullfrogs was deafening when scientists from the University of ...
American bullfrogs, which were once confined to much of eastern North America, have exploded around the world with dire consequences for native species. Now researchers say they may have found a way ...
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Giant invasive frogs are wreaking havoc on the West
On summer evenings in the Midwest, the muggy air comes alive with a chorus of crickets, cicadas, and frogs — especially bullfrogs. Their booming mating calls sound like something between a foghorn and ...
The American bullfrog is one of the worst invasive species in the world. Native to eastern North America, this species of frog was introduced to western parts of the U.S. and other countries as either ...
August is the month most folks consider bullfrog season. Frog hunters that live west of U.S. Highway 81 have already been in the field to harvest American bullfrogs. Those east of the highway can ...
A "constellation of eyes" welcomed Sidney Woodruff the first time she went nighttime frog spotting at Yosemite National Park. Her headlamp lit up thousands of eyes that belonged to the invasive ...
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