Recently proposed splits for the family Motmots
The Highland Motmot has long been recognized as a full species. For some odd reason, I had always ignored this treatment. The reference on the right is one of the earlier ones I know of, but the taxon has been given full specific status also in the Handbook of the Birds of the World,
Volume 6.
Highland Motmot     Momotus aequatorialis
Gould   1858
split from: Momotus momota
insert after: Momotus momota
Jon Fjeldså & Niels Krabbe,
Birds of the High Andes, 1990, p. 303

 
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