Amazona o./o. oratrix: The Pacific and Gulf slopes of Mexico; also, a population in Stuttgart exists. Amazona o./o. tresmariae: The Tres Marías Islands, off west-central Mexico. Amazona o./o. belizensis: Belize. Amazona o./o. hondurensis: The Sula Valley in northern Honduras. Of these, hondurensis was only recently described, while the population in northwestern Honduras and adjacent eastern Guatemala (near Puerto Barrios) resembles belizensis and is commonly included in that subspecies, but may actually represent an undescribed subspecies. It has sometimes been referred to as guatemalensis, but until it is officially described, the name remains provisional. An additional subspecies, magna, has sometimes been recognized for the population on the Gulf slope of Mexico, but today most authorities consider it invalid, instead including this population in oratrix. Description Subspecies in the nominate group (including subspecies xantholaema, nattereri and panamensis) have a total length of 33–38 cm (13–15 in). As most other amazon parrots, it has a short squarish tail and primarily green plumage. It has dark blue tips to the secondaries and primaries and a red wing speculum, carpal edge (leading edge of the wing at the "shoulder") and base of the outer tail feathers. The red and dark blue sections are often difficult to see when the bird is perched, while the red base of the outer tail feathers only infrequently can be seen under normal viewing conditions in the wild. The amount of yellow to the head varies, with the nominate, nattereri and panamensis having yellow restricted to the crown-region (occasionally with a few random feathers around the eyes), while the subspecies xantholaema has most of the head yellow. All have a white eye-ring. They have a dark bill with a large horn (gray) or reddish spot on the upper mandible, except panamensis, which has a horn-colored beak. Males and females do not differ in plumage. Except for the wing speculum, juveniles have little yellow and red to the plumage. Distribution and habitat The yellow-crowned amazon is found in the Amazon basin and Guianas, with additional populations in northwestern South America and Panama. It has been introduced to Grand Cayman. It is a bird of tropical forests (both humid and dry), woodlands, mangroves, and savannas and may also be found on cultivated land and suburban areas. In the southern part of its range, it is rarely found far from the Amazon rainforest. It is mainly a lowland bird, but has locally been