Passeriformes are a large order of the class birds, which comprise the most numerous of the orders, including nearly 6,000 species, more than half of the total number of bird species in existence.

Stock photo: Passeriformes are a large order of the class birds, which comprise the most numerous of the orders, including nearly 6,000 species, more than half of the total number of bird species in existence. was taken by rkb5cssnfn .