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
The Diplomatic Pouch degenerate", then banged his fist on the table and screamed. "The Diplomatic Pouch" was made with high production values at the level typical of 1920s adventure films. It was well received by the audience, who watched it with pleasure and the film was in the cinemas for a long time and was also shown abroad. But Dovzhenko had not yet found his signature style; he called the film "a pathetic attempt at writing." The Diplomatic Pouch The Diplomatic Pouch () is a 1927 Soviet silent thriller film directed by Alexander Dovzhenko. The first two parts of the film are lost.