Both males and females have horn-colored beaks and legs. Spectacles are the only parrotlets with a true eye ring. Fortunately, they are also quite prolific and relatively easy to breed so their numbers have increased dramatically. The rarest and largest species is the Yellow Face parrotlet weighing 50 grams and almost six inches in length. The males have deep violet blue primaries and secondaries similar to male Pacifics including the blue eye streak.
Females also have blue rumps which is lighter than the males.
As the name implies, both males and females have bright yellow faces. They also have horn-colored legs and beaks with a dark stripe running down the front of the upper beak. There are only seven verified pair of Yellow Face in the United States although they are readily bred in Europe. Slater's Parrotlets The Sclater's is approximately five inches in length. They have never been imported in the United States and are rarely bred in Europe.