[print of woodcut of feathers of Selasphorus platycerus, male and female]

Figure; by [unidentified]; second annotated by Charles Robert Darwin per DCP: Letter 6253 f8 - CD cited Salvin 1867, p. 160, on the noise made in flight by Selasphorus platycercus (the broad-tailed humming-bird), in Descent 2: 65; he included sketches and information from this letter. / f20 - Engravings made from Salvin’s sketches are in DAR 84.2: 83 and 84. See n. 8, above.