Jamaica; error = Hispaniola.
Until recently was considered conspecific with T. alba. Following colonization of Hispaniola in late 1970s by T. a. pratincola, latter found not to interbreed with nominate glaucops, and separation as two species now widely accepted. Several recent works consider nominate glaucops part of a natural group including insularis and nigrescens (last two forms possibly comprising a separate species, T. insularis, and treated as such in some references#R#R); others place insularis and nigrescens in T. alba; extinct form †cavatica (Puerto Rico), possibly extant as recently as 1912, sometimes treated as a separate species#R. Limited available data suggest there are similarities to small island races of T. alba that may also warrant treatment as separate species. Colour characters of race nigrescens may not be constant, rendering this taxon perhaps untenable. Three extant subspecies tentatively recognized.
Food and feeding
Status and conservation
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