Wanted: Invasive American bullfrogs
American bullfrogs, which have taken up residence in the Mission Valley, are a menace to native amphibians.
“Wanted: Invasive American Bullfrog” reads a poster recently distributed by the CSKT Wildlife Management Program, in tandem with the Montana Department of Fish, Wildlife and Parks and the Montana Conservation Corps.
Those sonorous voices that emanate from ponds in the evening are signs that the big frogs are invading Flathead Reservation to the detriment of other native species. According to the poster, bullfrogs measure four to six inches long, making them much larger than any native amphibians.
Their tympanum, or eardrum, is as large or larger than their eye.
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