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
Language of the birds and Amharic of Ethiopia. Ukrainian language is known as "nightingale speech" amongst its speakers. In Norse mythology, the power to understand the language of the birds was a sign of great wisdom. The god Odin had two ravens, called Hugin and Munin, who flew around the world and told Odin what happened among mortal men. The legendary king of Sweden Dag the Wise was so wise that he could understand what birds said. He had a tame house sparrow which flew around and brought back news to him. Once, a farmer in Reidgotaland killed Dag's sparrow, which brought on a