no locality = Chicoral, upper Magdalena Valley, Colombia.
Formerly treated as one of many races of C. mellisugus (which see); an alternative was, on basis of bill colour, to split the complex into four species, of which present species (including chrysogaster and nitens) was one, although this arrangement has at times been varied with the transfer of melanorhynchus and pumilus to present species. A more radical evaluation of the complex#R is largely followed here but, owing to both the sheer number of taxa in the original complex and the diaspora of specimen material, comparisons between taxa and decisions on their taxonomic status are limited mainly to geographical neighbours. Thus, present form is specifically distinct from geographically adjacent members of the scaled-down C. mellisugus (which see) on account of (fide published information#R) its use of hotter, drier habitats (1); male tail very deeply forked (morphometric character; at least 1); lower mandible largely red (2); male outer rectrices attenuate (uncertain score; none given); breast green (tinged blue in chrysogaster; ns); crown dull (but forecrown glittering in chrysogaster; 3); female outer rectrices with extensive grey bases, whitish tips (2). C. g. gibsoni and C. m. pumilus have been found sympatrically at two localities on W edge of Magdalena Valley, in Colombia#R. Three subspecies currently recognized.
Food and feeding
Status and conservation
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