Canyon Tree Frog
Hyla arenicolor
Photographed in Pima Canyon,
Sta. Catalina Mts., Arizona, Spring 1986.
The canyon tree frog escapes predation when it's superb camouflage beats the sharp eyes of black hawks, ringtails and skunks. They keep pressed agains a rock surface but will jump to the water when disturbed. They are common in canyon bottoms where there is semi-permanent water.
In the Sonoran Desert these frogs are distributed only in canyons with more or less permanent riparian habitat. Look for them generally in the upper elevations of the Sonoran Desert.