You've probably heard of invasive plants, but what about invasive birds? These common nonnative species are now abundant in ...

A large, pale gray-buff dove with a black collar ... may have escaped or been released from captivity by dove breeders, but most birds are thought to represent genuinely wild colonizers.

A small gray dove with black fringes on the feathers of ... on the underwing coverts could lead the unwary to identify such a bird as a ruddy ground-dove. The scaling of the upperparts is unique.