Birds beginning with X

Xantus' becard - The most distinguishing characteristics of this bird is the rose colored neck bib found in adult males. Males are mostly gray in color, with a contrasting darker upperside and a pale gray underside. Males also show a black crown. Females are mostly brown in color, with a rusty brown upperside, and a pale buffy underside. The crown is a dark gray, not nearly as stunning as the males. Its usual call is a mournful "seeeeuuuwww".
Xantus's Hummingbird - Adults are colored predominantly green on their upperparts and back. The tail is darkly colored and straight. The most prominent feature is the white eyestripe found in both males and females. The stripe is further enhanced by a black eyestripe below the white one. Both have cinnamon brown underparts, with the brown extending further up the throat in the female. Green replaces the brown in the throat of the male. The bill of the male is straight and very slender. It is red in coloration, and shows a black tip. His crown and face is bluish-black.
Xantus's Murrelet - The species is named for the Hungarian ornithologist John Xantus de Vesey who described it from specimens collected off Baja California.
Xolmis dominicanus - The Black-and-white Monjita is a species of bird in the Tyrannidae family. It is found in Argentina, Brazil, Uruguay, and possibly Paraguay. Its natural habitats are subtropical or tropical dry lowland grassland, subtropical or tropical seasonally wet or flooded lowland grassland, arable land, and pastureland. It is threatened by habitat loss. This species is sometimes spearated in the monotypic genus Heteroxolmis.
Xolmis salinarum - It is threatened by habitat loss.