An online resource based on the award-winning nature guide

Treefrogs

Gray Treefrog: A Frog of Many Colors

7-28-16 young gray treefrog2 IMG_5078A Gray Treefrog starts life off as a ¼” yellow tadpole. Eventually it may reach 2 ½” in length, and its body will have turned olive green with a red tail. Upon metamorphosing into a frog, the Gray Treefrog turns a bright emerald green and gradually develops into a mottled greenish-gray adult which can change its color from green to gray in about half an hour to match its environment. The two color phases of the maturing frog (solid green of the young, and mottled gray or green of adult) are so different it’s hard to believe that they are the same species. (Photo:  young Gray Treefrog; insert- adult Gray Treefrog)

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Spring Peepers Calling

9-11-15 spring peeper 174The peeps of male Spring Peepers can be heard fairly consistently this time of year. Unlike in the spring, these calls are coming not from bodies of water, but from the woods nearby. And they are single peeps coming from individual peepers, not the chorus of “sleigh bells” one hears in the spring. This phenomenon occurs so regularly in the fall that herpetologists have given it a name – “fall echo.” They speculate that the calling of peepers is spurred by light and temperature conditions, when fall climate conditions are similar to those of spring.

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Spring Peepers Metamorphosing

8-3-15 spring peeper 434Roughly two months ago Spring Peepers (Pseudacris crucifer) could be heard calling from temporary as well as permanent ponds, as males sang to attract mates. After mating took place, the females each laid hundreds of eggs, attaching them singly or in packages of two to three eggs to vegetation.

After hatching, it takes roughly two to three months for peepers to metamorphose into tiny, four-legged, land-dwelling adult frogs. They are now finding their way to shrubby growth and woodlands near ponds, where they are fairly well hidden in the leaf litter or on the lower leaves of shrubs. Here, in the shade, they feed on small insects and spiders. Roughly one-quarter-inch long at this stage, these small treefrogs will only reach one or one-and-a-half inches when fully grown. (For scale, Spring Peeper is sitting next to two red honeysuckle berries.)

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