Bock, Walter J. Department of Biological Sciences, Columbia University, New York, New York.
Last reviewed:August 2019
- Fossil record
- Economic significance
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The largest and most diverse order of birds, which is found worldwide, including the northernmost tip of Antarctica, most oceanic islands, and all terrestrial habitats. Over 5500 species of passerine birds (of which about 4400 species are Oscines, the true songbirds; see illustration) are known, which is just over half of the known species of Recent birds. The most closely related orders may be other land birds, such as the Coraciiformes and the Piciformes. See also: Coraciiformes; Piciformes
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