Whether you think they're brilliant or bullies, there's plenty to discover about these clever corvids. Learn about blue jays ...

A White-necked Jacobin chick may use mimicry or camouflage to avoid predators, resembling a caterpillar with fluffy feathers.

A baby hummingbird hatches. But it has fluffy feathers on its back, looking just like a dangerous caterpillar. Could this be ...