Female and male ruby-throated hummingbirds face off at our hummingbird feeder. This male perches close to the feeder and is very territorial, chasing away all other visitors to "his" feeder. The throat feathers of the male are iridescent, changing in their apparent color depending on your angle of view. From the side, these throat feathers tend to look almost black, but from straight on, the viewing angle of birds he confronts, they are shockingly red, seeming to emit their own glow.
From The animals in my yard