Falco hypoleucos, 1841

Falco hypoleucos -- Grey Falcon. Alternate name on piece: Falco hypoleucos. Fairly finished drawing of 2 birds, with meticulous detail on one bill and eye, suggesting Mrs. Gould's hand; little or no background. Evidence of erasure suggests that the final work was done over Gould's initial sketch; some very heavy strokes on top appear to be Gould's later modifications. Artist's name(s): Gould, John; Richter, Henry Constantine.