Western animal behavior and cognition researchers tracked the spatial cognition and lifespan of 227 mountain chickadees for more than a decade. They found the birds with better spatial learning and ...

While there is no denying ‘survival of the fittest’ still reigns supreme in the animal kingdom, a new study shows being smartest – or at least smarter – is pretty important, too. Western University ...

Hybrids of two common North American songbirds, the black-capped and mountain chickadee, are more likely to be found in places where humans have altered the landscape in some way, finds new CU Boulder ...

Mountain chickadees in Boulder have evolved a different tune to avoid getting mixed up with their cousins, according to a new CU Boulder-led study published Oct. 9 in the Journal of Evolutionary ...