Notes on the rufous-capped thornbill Chalcostigma ruficeps, a new hummingbird species for Colombia
Schuchmann, Karl-L
Article
1978
Bulletin of the British Ornithologists' Club
98
115--116
BioStor
London, British Ornithologists' Club, 1893-
BioStor: https://biostor.org/reference/112667
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