The Indian grey hornbill (Ocyceros birostris) presents itself as a medium-sized bird, approximately 61 cm in length. Its plumage is predominantly greyish brown, with a lighter grey or dull white underbelly. A distinctive feature is its black or dark grey horn, adorned with a casque that extends to the horn's curvature. This species is one of the few hornbills that have adapted to urban environments, utilizing large avenue trees for sustenance.
Males are identified by a larger casque atop a dark bill, with a yellowish culmen and lower mandible. The skin around their eyes is typically dark. Females, on the other hand, display a more yellowish bill with black on the basal half and casque. Juveniles are casque-less, with dull orange skin surrounding the eye.
The Indian grey hornbill is an arboreal creature, favoring the plains up to elevations of about 610 meters. It thrives in cities with old avenue trees, as well as in various natural habitats.
This species is indigenous to the Indian subcontinent, ranging from the Himalayan foothills to the Ganges Delta, westward to the Indus system, and in urban areas with suitable tree cover.
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