One of the hardiest sparrows, this is the only one likely to winter in much of the far northern United States and southern Canada, where the dark-eyed junco can also be found. At that season it is ...

The sloth is the world's slowest mammal, so sedentary that algae grows on its furry coat. The plant gives it a greenish tint that is useful camouflage in the trees of its Central and South ...