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Songbirds or perching birds are called passerines. A passerine is a bird of the order Passeriformes, which contains the most species of birds of the twenty-seven orders of birds on Earth. They represent about 45% of the bird species in Michigan, and nearly three-fifths of all living birds worldwide.The largest passerine is the Common Raven which can weigh as much as 3 pounds. They can be found across the northern hemisphere. When you hear the variety of noises, such as caws,
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croaks, and gurgles that the raven produces you may not think of it as a songbird, but their wide range of vocalizations for communication is impressive.The smallest North American passerine is the Verdin, a tiny, active songbird of the arid southwestern United States and northern Mexico , which weighs 0.2 oz.
Related article:
List of Birds in the United States - http://en.wikipedia.org/wiki/List_of_birds_of_the_United_States
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