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Cyanerpes, Jan 4, 1958, II 25

the captive ♂ Blue Honeycreeper in perfect nuptial plumage began to display violently, off and on for quite a long time; toward the ♀. Obviously primarily hostile. Presumably due to the same cause(s) as the aggressiveness of the Green Honeycreepers today (or merely, perhaps, due to the "stirring up" effect of the Green Honey creeper attacks). 
The ♂'s display took the form of a series of "Wh complex" patterns; somewhat different from any I have seen before, although incorporating most of the same elements. 
When I first saw the ♂ he was uttering CN's (apparently just ordinary CN's) in a St Posture comme ça: 

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Head very ruffled, looking very large. Under feathers not very ruffled.
Yellow of wings not visible most of the time. Legs flexed. This posture varied considerably in height; i.e. the extent to which the breast was lowered varied considerably at different times. This St Posture was combined & alternated with a variety of movements. The ♂ hopped from twig to twig from time to time, and kept turning in order to present his chin & breast to the ♀