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Cyanerpes, Nov. 30, 1957, III. 12

intervals between CN's). It is noticeable, however, (at least among the visiting ♂'s) that the crest is usually or always smoothed down when HCN's are uttered.
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This species certainly has an "anxiety" pre-escape posture; but I rather doubt if it is ritualized. Very sleek and long; (the sleekness, the smoothing of all feathers may be significant in helping to interpret various display movements and postures.)
   The whole "visiting" business is really quite remarkable in a way. As soon as I put the captive birds out in the aviary, they began to be visited by lots of ♂'s (in both perfect and incomplete plumage) and at least one ♀. Most frequently in early morning, just after dawn. The visitors may just sit in the tree above the aviary, or fly about excitedly, or even come down and fly about and even land on the cage itself, apparently trying to get. (It should be noted, incidentally, that the visitors do not seem to be interested in the food of the captive birds; they don't usually come to that side of the cage) The most remarkable thing about the whole situation is the relative scarcity of elaborate display. This is just the situation in which I would expect all sorts of elaborate hostility ―particularly as there may be several wild ♂'s visiting at the same time, and flying or sitting close together― but nothing of the sort! The visitors may do the TF's and WF's, CR, and utter CN's and HCN's, but I have never seen anything