Keel-billed Toucan

Also known as Rainbow-billed Toucan, Sulphur-breasted Toucan

Keel-billed toucans navigate the tropical canopy in small, playful flocks, often engaging in bill-fencing duels that help establish social hierarchy. Their massive, hollow bills are surprisingly lightweight and serve as highly efficient thermal radiators to regulate body temperature in the humid heat. At night, these social birds roost together in tight tree cavities, tucking their tails over their backs and folding their bills underneath to conserve space.