Dark-eyed juncos are unique sparrows that nest on ... and calling in aggravation at the intrusion. Polytypic. Length 6.3". The 12 subspecies show marked variation and fall into 5 major groups ...

Their neon-green bodies may play a similar role in thwarting predators. Many of the animals that eat red-eyed tree frogs are nocturnal hunters that use keen eyesight to find prey. The shocking ...