The Blue-crowned Parakeet (Thectocercus acuticaudatus), also known as the Sharp-tailed Conure, is a vibrant and charismatic parrot species native to South America. Adult Blue-crowned Parakeets typically measure between 13 and 15 inches in length and weigh between 3.5 and 5.5 ounces, making them medium-sized parrots with a robust build.

Distinguishing field marks of the Blue-crowned Parakeet include its bright green plumage, a distinctive blue crown extending from the forehead to the nape of the neck, and a red patch on the upper wing coverts. The tail is long and tapered, with a noticeable blue hue on the central feathers. Additionally, they have a pale yellowish-white eye-ring and a grayish-black bill, adding to their striking appearance.

Blue-crowned Parakeets are primarily non-migratory birds, typically remaining in their established territories year-round. They inhabit a variety of habitats across their range, including savannas, woodlands, forest edges, and urban areas. They are highly adaptable and can be found foraging for food in small flocks or pairs.

In addition to their vibrant plumage, Blue-crowned Parakeets are known for their vocalizations, which include squawks, screeches, and chattering sounds. Their loud and raucous calls serve important purposes such as communication within the flock and territory defense against intruders.

Blue-crowned Parakeets are omnivorous birds with a varied diet that includes fruits, seeds, nuts, flowers, and insects. They are also known to visit agricultural fields and orchards to feed on crops such as maize and sunflower seeds. While they can sometimes be considered agricultural pests, their adaptability and resilience have contributed to their successful colonization of various habitats throughout their range.