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A Pacific tree frog (green morph) sitting on a sunflower leaf stem, Nanoose Bay British Columbia. The Pacific tree frog grows up to two inches from snout to urostyle. The males are usually smaller than the females and have a dark patch on their throats. The dark patch is the vocal sac, which stretches out when the male is calling. Pacific tree ...
The Baja California chorus frog (Pseudacris hypochondriaca) is a cathemeral species of treefrog of Western North America. [1] It was formerly considered as a population of the Pacific chorus frog ( Pseudacris regilla ), but was split and raised to species status in 2006.
In túngara frogs (Engystomops pustulosus), male frogs increase the complexity of their calls, adding additional note types when greater numbers of competitor males are present, which has been found to attract greater numbers of female frogs. [23] Some species change their courtship calls when females are especially nearby.
Pseudacris (commonly known as the chorus frogs) is a genus of frogs in the family Hylidae found in North America ranging from the Pacific coastline to the Atlantic.. The name of the genus comes from the Greek pseudes (false) and akris (), probably a reference to the repeated rasping trill of most chorus frogs, which is similar to that of the insect.
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Acrisinae is a subfamily of the tree frog family Hylidae. There are only two genera in this subfamily, Acris (cricket frogs) and Pseudacris (chorus frogs). They are native to most of the Nearctic realm , and are found as far north as the Great Slave Lake in Canada, all across the United States , and down Baja California and some parts of ...
The yellow-spotted tree frog is pale green with bronze patches that highlight dark spots. It has entirely webbed toes and is set apart from other frogs by the cream markings on its thighs. It’s ...
Male Dendropsophus microcephalus calling. Sexual selection in amphibians involves sexual selection processes in amphibians, including frogs, salamanders and newts.Prolonged breeders, the majority of frog species, have breeding seasons at regular intervals where male-male competition occurs with males arriving at the waters edge first in large number and producing a wide range of vocalizations ...