Sexual dimorphism refers to observable differences between males and females of the same species. In basic terms, it means that a male of a species is easily distinguished from a female. In birds this usually means differences in size or in...

Today this pretty parrot joins Birdorable as the 4th bird in our 2017 Birdorable Bonanza: the Blue-headed Macaw! Blue-headed Macaws are small macaws found in western parts of South America, where their preferred habitat is humid forest. They are often found near...

The cloaca is an essential anatomical feature in birds (the organ also exists in reptiles, amphibians, and some fish). In birds, the cloaca is a single opening located at the base of the tail that serves multiple functions. It is the exit point for the digestive, urinary, and...

Our Birdorable Bonanza: 2015 Advent Edition is rolling along! Today's new bird is a South American species of flycatcher: the Many-colored Rush Tyrant! Many-colored Rush Tyrants are songbirds in the flycatcher family. They are found across much of southern South America. This...