Separating the yellowlegs

Just in from an excellent study of an adult Lesser and an adult Greater at the Richmond Sewage Lagoons southwest of Ottawa. With LESSER YELLOWLEGS, note the thin all-dark bill, light eyebrow, faint dark cap to the top of the head and relatively ‘clean’ underside with faint, light barring to flanks. With GREATER YELLOWLEGS, note the pale-based bill which is thicker and proportionately longer than that of a Lesser’s, more prominent streaking to the head and neck, more conspicuous orbital (eye) ring and an underside which is more heavily-marked, esp. the barring to the flanks. 18 July 2016.

DSCN0557 (1280x466)