World Wildlife Fund. 2010. Petenes mangroves. eds. Mark McGinley, C.Michael Hogan & C. Cleveland. Encyclopedia of Earth. National Council for Science and the Environment. Washington DC
si.edu
sms.si.edu
Smithsonian Marine Station: "From a distance, [the roseate spoonbill] can be confused with the [flamingo], due to the similarity of body color in both species. However, the roseate spoonbill is generally smaller than the flamingo, with a shorter neck, and a longer, spoon-shaped bill."
ufl.edu
edis.ifas.ufl.edu
University of Florida, Florida's Wading Birds: "Flamingos may be confused with the Roseate Spoonbill for a variety of reasons. Both species have relatively long legs, long necks, and pinkish plumage. Both also sift through the water with their bills when feeding. Despite these similarities, the two species are unrelated. The easiest ways to tell the two species apart are by the dark outer wing feathers (primaries) on the flamingo and both species' distinctive bill shapes."