Colorado Parks and Wildlife biologists did a field survey of boreal toads, a state endangered species, at Zimmerman Lake, Larimer County, CO. Each toad caught was check for the chytrid fungus, which attacks amphibians by destroying their skin, disrupting their immune systems and causing heart failure as a way to assess the health of the boreal toad population. The biologists collect the toads eggs to be hatched to restock in locations other locations...

How big game survive winter.

This is a multi-image video slide show that traces the efforts under way to save some of Colorado's threatened and endangered species.