Design adds value faster than it adds costs

The order is divided into three suborders, Tyranni (suboscines), Passeri (oscines), and the basalAcanthisitti[4]. Oscines have the best control of their syrinx muscles among birds, producing a wide range of songs and other vocalizations (though some of them, such as the crows, do not sound musical to human beings); some such as the lyrebird are accomplished imitators

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