Cerro Flores, eastern Chiriquí, Panama.
Until recently, considered conspecific with A. prasinus along with A. wagleri, A. albivitta, A. cyanolaemus and A. atrogularis. Differs from A. prasinus in its royal-blue vs white chin, throat and subocular cheek (3); extensive black along cutting edge of upper mandible (2); richer brown-shot crown and nape (2); moss-green vs rich bluish-green underparts (ns). Differs from A. albivitta in its royal-blue vs white chin, throat and subocular cheek (3); grey vs pink periorbital skin (3); richer brown-shot crown and nape (2); narrower black line along cutting edge of upper mandible (ns). Species status for the subspecies cognatus has been claimed#R, the main characters that distinguish it being size and the lack of a rusty spot at base of upper mandible#R, but to date the evidence on size remains unpublished and the rusty spot is also lacking in the population E from Ngöbe-Buglé (WC Panama)#R. Proposed race maxillaris (Costa Rica, W Panama) is here treated as synonymous with caeruleogularis. Two subspecies currently recognized.
Food and feeding
Status and conservation
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