Formerly placed in genus Zenaidura, along with Z. auriculata and Z. graysoni, and these three are clearly close relatives, as confirmed by genetic evidence#R. Until recently considered conspecific with Z. graysoni (see below). Although race clarionensis is geographically separated from mainland forms of Z. macroura by Z. graysoni, it is closer morphologically to Z. macroura: its forehead is mid-brown, this being the strongest manifestation of its generally rather darker colour on breast and upperparts (2); its bill is rather longer and feet notably bigger (2), but still not as large as those of Z. graysoni. Form described as race tresmariae (Tres Marías Is) was merely a migrant specimen of carolinensis#R. Five subspecies recognized.
Introduced (macroura) to Hawaiian Is.
Food and feeding
Status and conservation
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