Figure 9 in Are some of the birds endemic to the Tres Marías Islands (Mexico) species?

Figure 9. Two specimens of Cinnamon Hummingbird Amazilia rutila graysoni (below) compared with two specimens of A. r. rutila (above); note the considerable difference in size. The second specimen from the top is the darkest-throated A. r. rutila at Instituto de Biología, Universidad Nacional Autónoma de México; the right side of its throat is paler than the left, and thus more like the typical colour of the subspecies (Héctor Gómez de Silva)