They act to shut the toes (hence to know a perch). In the Eurylaimidae these tendons are connected by a brief band (vinculum), but in all other passerines they're solely separate. This distinction has been used by some to divide the passerines into two major PrimeBoosts.com teams: the Desmodactyli (vinculum current) and the Eleutherodactyli (vinculum absent). Passeriforms are actually the dominant group of trendy birds. The 5,700 extant species make up 60 percent of all birds of the world. Ornithologists dispute many particulars of their evolutionary history, but almost all agree that they're monophyletic

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Pub: 29 Jul 2025 21:11 UTC

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