Scientists have long been mystified about how animals who munch on plants in Yellowstone National Park all get enough food to eat. Animals all living in the same habitat and eating the same foods ...

Generally shy and elusive, the yellow-billed cuckoo can be easily overlooked. Its calls are usually loud and often provide the best evidence to the presence of the bird. It favors eating ...

Length 5". A relatively large carduelid. Breeding male: unmistakable. Body entirely bright lemon yellow with white undertail coverts. Jet black cap. Black wings with yellow lesser coverts and ...