the external ridge on the upper mandible of a bird's bill
Examples of 'culmen' in a sentence
culmen
Five measurements were used to develop four discriminant functions: culmen, bill height and width, tarsus length and middle toe claw.
Diego MONTALTI et al 2012, 'The reliability of morphometric discriminant functions in determining the sex of Chileanflamingos Phoenicopterus chilensis', Current Zoologyhttp://www.currentzoology.org/paperdetail.asp?id=12150. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)