Wing chord (biology)
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Wing chord is an anatomical measurement of a bird's wing. The measurement is taken with the wing bent at a 90-degree angle, from the most prominent point of the wrist joint to the most prominent point of the longest primary feather. It is often taken as a standard measurement of the proportions of a bird and used to differentiate between species and subspecies.
- Ralph, C. John, ed. (1999). Handbook of Field Methods for Monitoring Landbirds. DIANE Publishing. pp. 17–18. ISBN 9780788172342. Retrieved 7 May 2018.
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