The Scarlet Ibis (Eudocimus ruber) is a species of ibis in the bird family Threskiornithidae. It inhabits tropical South America and islands of the Caribbean. In form it resembles most of the other twenty-seven extant species of ibis, but its remarkably brilliant scarlet coloration makes it unmistakable.
This medium-sized wader is a hardy, numerous, and prolific bird, and it enjoys protected status among humans. Its IUCN status is "least concern". The legitimacy of Eudocimus ruber as a biological classification, however, is in dispute. Traditional Linnaean taxonomy classifies it as a unique species, but an increasing number of scientists have moved to reclassify it as a subspecies of a more general American ibis species, along with its close relative Eudocimus albus.
The species was first classified by Carl Linnaeus in 1758. Initially given the binomial nomenclature of Scolopax rubra (the name incorporates the Latin adjective ruber, "red"), the species was later designated Guara rubra and ultimately Eudocimus ruber.
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