|Cajun Chorus Frog (Pseudacris fouquettei)|
A little further west, the Spotted Chorus Frog (Pseudacris clarkii) takes over in the grasslands and prairies of central and coastal Texas. Its call is a higher pitch, faster "creeeek" call than the other chorus frog.
|Spotted Chorus Frog (Pseudacris clarkii)|
They are not generally found together in the same habitat, but I came across this flooded field in Fort Bend County, Texas where both species were calling together. There were also Squirrel Treefrogs (Hyla squirrela) in this chorus.
You can clearly hear the deeper, slow "fingernail over a comb" call of the Cajun Chorus Frog with the shorter, faster higher pitched "creeeeek, creeeeek, creeeeek" of the Spotted Chorus Frog above it. You also hear the almost duck-like quack of the Squirrel Treefrog mixed in.
Here's a section of a rather dirty spectrogram showing these calls. The lower pitched quacking sound underline in green is the Squirrel Treefrog (Hyla squirrela). The lower pitched sound like a fingernail over a comb underlined in red is Cajun Chorus Frog (P. fouquettei, marked feriarum). The short "creeeks" underlined in blue are the Spotted Chorus Frogs (P. clarkii).
Here is the recording of that particular section.
© Chris Harrison 2012