The slender-billed parakeet (Enicognathus leptorhynchus) or choroy, is a species of bird in subfamily Arinae of the family Psittacidae, the African and New World parrots.

[3][4] The slender-billed parakeet has also been named Enicognathus byroni, but the current specific epithet leptorhynchus has priority.

[3][4][5] The slender-billed parakeet primarily inhabits southern beech (Nothofagus) and Chilean pine (Araucaria araucana) forest.

[4] The slender-billed parakeet moves from the upper elevations to lower ones in the austral winter months of May through September.

[4] The slender-billed parakeet's year-round diet includes seeds of grass and thistle, buds, and berries.

In autumn the seeds of Araucaria are a major component; it appears that its unusual bill is adapted to feed on them.

The slender-billed parakeet's most common call is "a nasal grating note, typically repeated in long series, e.g.