Biofluorescence is widespread in birds-of-paradise, a group of tropical birds famous for their spectacular courtship dances.

These charismatic birds are native to New Guinea and nearby regions and are known for their vibrant plumage and elaborate courtship displays. The rare hybrid King of Holland's bird-of-paradise was ...

On freshly molted birds, black plumage has white spots all over; by winter, spots start to disappear; and by spring, the birds are glossy black all over, with strong suffusions of iridescent pinks ...

Polytypic. Length 7.8". Sexually dimorphic. Breeding male: the adult male is unmistakable—all bright red—and achieves its brightest plumage by the end of its second calendar year. Breeding ...

I am seeing just a few purple finches at the feeders now. Last year, over a dozen were here on many days in January. Some may migrate to the south […] ...