Bush-billed hornbill (Anorrhinus galeritus) is a species of hornbill found only within the tropical rainforests of Southeast Asia. The original occurrence of this characteristic crested bird covers the Malaysian peninsula, Sumatra and Borneo.
These birds reject the solitary lifestyle typical of other members of the hornbill family. Instead, they like to live in tight groups and lift their young together in a single nest for optimum reproductive output within the wild, creating an unusually distinct social system amongst regional bird species.
Living in large family herds
The decision to avoid a solitary existence causes these herds to continuously move in large colonial herds of as much as twenty individuals. Their highly social characteristics are in stark contrast to most hornbill species, which remain very private inside their territories.
Traveling together in large groups has tactical benefits when foraging within the vast treetops. Herds can easily opened up in multiple directions to locate ripening fruit trees, ensuring everyone finds food more quickly.
Their common feeding naturally builds strong social bonds between herd members all year long. Such intense colonial proximity makes this bird essentially the most common hornbill species lively together within the wild.
Sharing nesting responsibilities
These strong social bonds, maintained all year long, reach their absolute peak in the course of the breeding season, due to a detailed system of mutual cooperation. The responsibility for caring for the chicks is distributed evenly amongst all members of the flock, and doesn’t fall solely on the parents.
Sexually immature young adults play an lively role as dedicated helpers in the course of the breeding season.
This support crew is answerable for taking turns collecting food supplies from different corners of the forest to deliver back to the nest, allowing the colony to keep up a high survival rate even during sparse seasons.
This efficient division of labor keeps the dominant pair in peak physical condition throughout the reproductive cycle, mechanically increasing the survival of the brand new generation against the specter of starvation.
Strength in numbers
In addition to securing the nest’s food supply, group strength also serves as a significant shield when the flock must embark on long journeys.
Moving through dense tropical rainforests carries significant risk from predators lurking within the trees. Large numbers of individuals provide a robust psychological effect to intimidate intruders throughout the territory. Other animals are inclined to avoid direct conflict when witnessing the passage of a bunch of huge birds.
High collective alertness makes the chance of sudden ambush by predators extremely low. A compact herd is the best guarantee of safety for the well-being of every member.
Natural technique of reforestation
High group mobility across regional boundaries directly influences the behavior of Southeast Asian ecosystems. The robust design of hornbills’ beaks allows them to eat large forest fruits that smaller birds simply cannot swallow.
The undigested seeds are dropped of their excrement onto their flight paths through the jungle. This natural dispersal process supports the regeneration of untamed fig trees and valued endemic plants on the forest floor.
The natural dispersal process supports the regeneration of untamed fig trees and valued endemic plants on the forest floor. When heavy rains or natural tree falls create open gaps within the tree cover, seeds dropped by these traveling flocks quickly take root within the newly sunny soil.
