Parakeet Derbyan basic information

The Derbyan Parakeet is larger than most parakeets. It averages 20 inches (50 centimeters) at maturity. It is said to be similar in size to the popular Alexandrine Parakeet. These birds are sexually dimorphic, meaning that males and females may be distinguished visually. Their plumage is green overall with black lower cheeks and lores. Parts of their thighs and wing covets are a mauve to slightly grey-blue and they have striking violet blue heads. They have colorful wings, making them quite striking. Males have a red upper mandible, while the females have an entirely black bill. They have pale yellow eyes and grey feet. The female may also be distinguished from the male by the presence of a brown band behind the ear-coverts. Immature Derbyan Parakeets are easily distinguished from adults because they have green crowns, and both males and females have pink bills. Additionally, their eyes are dark, and do not get light until they reach maturity. Adult plumage is typically reached by the time they are 2 years old.