The perching birds (songbirds and their relatives): the largest bird order by a wide margin, defined by a foot with three toes forward and one back, well suited to gripping a branch. Passeriformes accounts for well over half of all living bird species, including crows, sparrows, finches and thrushes.
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Member Species/Taxa CountApproximate described-species (or, for a genus, described-taxon) count; continually revised as species are newly described, reclassified or synonymized. Taxonomic Rank Scientific Name Passeriformes
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