This is a great photo collage! It's amazing to see all three species in one institution and to have all three appear in one photo side-by-side for comparison. The Horned Screamer is very distinctive, but I have trouble distinguishing the Black-necked and the Crested/Southern screamers when they're by themselves. The Crested Screamer is the dominate species in the U.S., so it's always my default for identifications.
