The Golden-collared Toucanet is a small, stout-billed toucanet found in the western Amazon. A sexually dimorphic species, males show predominately black plumage, while females show predominately red-brown plumage. Both sexes have a conspicuous gold collar, giving rise to the species' name. The Green-billed (or Langsdorff's) subspecies of the Golden-collared Toucanet is distinguished from the nominate subspecies primarily by the coloration of its bill – a greenish-grey as opposed to maroon-red. They are typically found in mature upland rainforest, and are territorial throughout their range, often wiping their bill loudly on a branch during aggressive displays. They forage in small groups of up to four, and are known to join mixed-species foraging flocks.

Scientific Name: Selenidera reinwardtii langsdorffii
Range: Bolivia, Brazil, and Peru
IUCN Conservation Status: Least Concern
CITES Listing: Not listed

Plumage: Male is black on the head and underparts, with a gold-yellow patch behind the eye and a yellow band separating the neck from the olive green back, a gold or orange-gold patch on the flanks, and red undertail coverts. Female is similar to male, but with red-brown coloration instead of black.
Eyes: Pale iris with dark spots on each side of the pupil, making it appear slit-like, with bare turquoise skin surrounding the eye
Bill: Stout, greenish-grey bill with a broadly black tip

Length: 12 to 14 inches (30 to 35 centimeters)
Weight: 5 to 7 ounces (134 to 200 grams)

Vocalization: A repeated, guttural "grruk" note producing a distinctive growling call

Breeding: Nests in tree cavities, laying 2-4 eggs, with both parents incubating and caring for the young