The most commonly seen bird in our daily lives is the crow. These warm-blooded vertebrates belong to the class Aves, and are distinguished by their feathers and toothless beaks. Besides that, they lay hard-shelled eggs, have a high metabolic rate,…
The most commonly seen bird in our daily lives is the crow. These warm-blooded vertebrates belong to the class Aves, and are distinguished by their feathers and toothless beaks. Besides that, they lay hard-shelled eggs, have a high metabolic rate,…