Incised Webbed Foot of a Tern Small 272×320 Medium 543×640 Large 869×1024 Download Tiff Original 2037×2400 | (538.9 KB) Description "...one or both webs may be so deeply incised, that is, cut away, that the palmation is practically reduced to semipalmation, as in terns of the genus Hydrochelidon." Elliot Coues, 1884 Keywords bird anatomy, bird toes, birds, external parts of birds, Hydrochelidon, incised webbing, ornithology, palmate, palmated feet, seabirds, tern, wading birds, webbed feet Galleries Bird Anatomy Source: Elliot Coues Key to North American Birds (Boston, MA: Estes and Lauriat, 1884)