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How many species are in the suborder Passeri?

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Reed warbler (Acrocephalus scirpaceus) — Passeriform Reed warbler (*Acrocephalus scirpaceus*).

The suborder Passeri, also known as oscines or songbirds, consists of approximately 4,500 species.1

This group represents one of the two primary suborders within the order Passeriformes, which is the largest and most diverse order of birds globally.1