When the sacs are filled with air, they become sounding boxes for the noises produced by the vocal cords. The tiny tadpoles are a metallic reddish color. By fall, the little Peepers have eaten a great deal and stored food in their bodies anticipating hibernation. Spring Peepers are found in woods surrounding ponds and swamps, ranging from South East Canada southward to Central Florida, and westward to Texas. There has been a world-wide decline in the populations of certain amphibia.
Automobiles take a huge toll of the tiny creatures hopping across the rain-wet roads at night.
Those that avoid being crushed may meet concrete road dividers that prevent migration to their ancestral ponds. Some scientists suggest that the damaged ozone layer in the upper atmosphere allows through too much harmful ultraviolet B light that strikes and harms the eggs. It is certainly true that amphibians absorb gases and chemicals easily through their skins, and the absence of these animals in a wetlands is a good indicator that pollution is present.