cold frog song (AUDIO)
Caption
A Sierran treefrog sings a slower, more sluggish breeding call in cool spring weather. Once it's warmer, his songs will pick up the pace, which female frogs find more appealing and lets them know the environment is conducive to laying eggs.
Credit
Julianne Pekny/UC Davis
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms.
License
CC BY-NC-SA