The Life of Birds: Structures and Processes in Birds

Birds are endothermic animals capable of maintaining a constant body temperature, allowing them to stay active in cold environments. They require significant energy, consuming large amounts of food, which is processed through their specialized digestive system. Birds have a unique excretory system that conserves water, aiding in flight. Their circulatory system, with a four-chambered heart, supports high metabolic rates. The respiratory system includes lungs and air sacs for efficient oxygen exchange. Birds possess a well-developed nervous system, with keen senses of sight and hearing.

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