Bird anatomy Birds have a four-chambered heart, in common with mammals, and some reptiles (mainly the crocodilia). This adaptation allows for an efficient nutrient and oxygen transport throughout the body, providing birds with energy to fly and maintain high levels of activity. A ruby-throated hummingbird's heart beats up to 1200 times per minute (about 20 beats per second). Many birds possess a muscular pouch along the esophagus called a crop. The crop functions to both soften food and regulate its flow through the system by storing it temporarily. The size and shape of the crop is quite variable among the birds. Members
Organisation for the Preservation of Birds and their Habitat Nevertheless, many bird species are endemic to Indonesia, about 17% of all the bird species that exist in the world, live in this archipelago. Often, birds like parrots are illegally caught from the wild at a large scale, and sold as pet. Other bird species are captured for consumption. Many people even shoot birds that fly around urban areas, just for fun. Conservation Program. Burung Indonesia works to conserve important species of birds and their habitats through active involvement of local communities, government institutions, the private sector and other stakeholders. To be more focused on the conservation program, the organization