BLUE BIRDS
There are bluebirds, such as eastern bluebirds, and there are blue birds, including eastern bluebirds, indigo buntings and blue grosbeaks. These species of beautiful, small birds raise young across much of the eastern United States. Males of each of these lovely species are mostly blue, their breeding plumages, and most appealing feature. Their mates and young, however, have earthy feathering, which camouflages them. Males of each kind sing pretty songs to establish territory, discourage rival males and attract mates for rearing offspring. Their delightful songs also indicate the presence of each species to us. Male eastern bluebirds have the most beautiful blue feathering on their upperparts that I have ever seen. I remember seeing a pair of them in flight in our garden when I was about eight years old and thinking how bright and noticeable the male's blue feathering was...