A Roseate Spoonbill wading in shallow water in search of food.
The Roseate Spoonbill (Platalea ajaja) (sometimes placed in its own genus Ajaja) is a gregarious wading bird of the ibis and spoonbill family, Threskiornithidae. It is a resident breeder in South America mostly east of the Andes, and in coastal regions of the Caribbean, Central America, Mexico, and the Gulf Coast of the United States. Like the American Flamingo, their pink color is diet-derived, consisting of the carotenoid pigment canthaxanthin. Another carotenoid, astaxanthin, can also be found deposited in flight and body feathers. A 2010 study of mitochondrial DNA of the spoonbills by Chesser and colleagues found that the Roseate and Yellow-billed Spoonbills were each other's closest relative, and the two were descended from an early offshoot from the ancestors of the other four spoonbill species. They felt the genetic evidence meant it was equally valid to consider all six to be classified within the genus Platalea or alternatively the two placed in the monotypic genera Platibis and Ajaja, respectively. However, as the six species were so similar morphologically, keeping them within the one genus made more sense.[4]
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