a1. Tail moderate, nearly square; plumage mostly blackish with purple and green metallic reflections. Columbinæ (p. 51) a2. Tail greatly elongated and graduated; plumage mostly chestnut or rufous-brown with little metallic color. Macropyginæ (p. 52)
a1. Tail moderate, nearly square; plumage mostly blackish with purple and green metallic reflections. Columbinæ (p. 51)
a2. Tail greatly elongated and graduated; plumage mostly chestnut or rufous-brown with little metallic color. Macropyginæ (p. 52)
