About Crotophaga sulcirostris Swainson, 1827
The groove-billed ani (Crotophaga sulcirostris Swainson, 1827) measures approximately 34 cm (13 inches) in length, weighs between 70–90 g (2.5–3.2 ounces), and has a wingspan ranging from 41–46 cm (16–18 inches). Its entire body is black, and it has a very long tail that is almost as long as the rest of its body. It has a large bill with lengthwise grooves that run along the full length of the upper mandible.
This species is very similar to the smooth-billed ani; some smooth-billed ani specimens have bills as small as those of groove-billed anis, and grooves on the basal half of the bill. The two species are most reliably distinguished by their voice and geographic range. When flying, the groove-billed ani alternates between quick, choppy wing flaps and short glides.
Like other members of the ani group, the groove-billed ani lives in open and semi-open habitats, including pastures, savannas, and orchards. Its diet consists mostly of a mixed intake of insects, seeds, and fruits.
