Boreal toad Anaxyrus boreas Boreal toads (also known as western toads) have a range extending from southern Alaska to northern California and into Wyoming and Colorado west of the continental divide. They occur throughout Glacier and may be found at elevations up to , feet. These amphibians, nocturnal during the summer months and diurnal during the spring and fall, frequent mountain meadows and wetlands near aspen trees or Douglas fir. The tadpoles are toxic and adults have potent glands behind their eyes and on their hind legs. This makes them better able to coexist with fish than many amphib
Boreal toad Anaxyrus boreas Boreal toads (also known as western toads) have a range extending from southern Alaska to northern California and into Wyoming and Colorado west of the continental divide. They occur throughout Glacier and may be found at elevations up to , feet. These amphibians, nocturnal during the summer months and diurnal during the spring and fall, frequent mountain meadows and wetlands near aspen trees or Douglas fir. The tadpoles are toxic and adults have potent glands behind their eyes and on their hind legs. This makes them better able to coexist with fish than many amphibian species which are often easy prey for a hungry trout. Boreal toads are disappearing from parts of their Rocky Mountain range, but there is no evidence they are declining in Glacier. In the burned areas following the large Moose Fire of , nearly a dozen new toad breeding sites appeared the following year. Some park roads had to be closed for a time because thousands of migrating toadlets were moving across them. Scientists in Glacier are currently studying the toads to determine their adaptability to different hydrological conditions and response to fire in their habitat, as well as how they cope with the effects of climate change on toad (Anaxyrus boreas).
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