Animales complejos: aves

Birds are fascinating creatures with nearly 10,000 species worldwide. They differ from reptiles by having feathers and being endothermic, maintaining a constant body temperature. Birds are adapted for flight with lightweight skeletons and specialized muscles. They have four-chambered hearts, beaks instead of teeth, and developed brains for complex tasks. Birds reproduce by laying eggs, and their diversity makes birdwatching enjoyable.

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