Hornbill
Hornbills are a group of large, colorful birds found throughout Africa and Asia. They are known for their striking appearance, with long, curved bills that are often brightly colored or patterned. Something truly unique the hornbills boast is their nesting behavior. Female hornbills build their nests inside tree cavities, using mud and their own feces to seal the entrance shut. Once the nest is complete, the female enters the cavity and begins to molt, shedding all of her flight feathers. She then spends the next several months incubating her eggs and raising her chicks entirely inside the sealed nest. The male hornbill will bring her food and regurgitate it through a small opening in the mud seal. Once the chicks are ready to fledge, the female will break through the mud seal, and the family will emerge from the nest. This remarkable nesting behavior is thought to provide the chicks with protection from predators, as well as a stable microclimate inside the sealed nest.