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Cyanerpes, Dec. 7, 1957, II 19 not think that there were a distinct "Al" CN pattern. If not, why doesn't this species have an AlCN??) Then, particularly when the ♂ began his HCN-ing, she gave a lot of HCN's too, almost antiphonally. Gradually quieting down. Now just flying a bit, with the usual Fluking, and an occasional CN. The ♂ just sat at first, with an occasional flick; then began a whole host of HCN's, quite regular, each note a few seconds apart. Crown feathers usually smooth; a trace of CR between notes, otherwise no ritualized postures or movements (except for occasional flicking, of course). This continued for a long time, and then, while the HCN's remained the same and almost as frequent, the posture gradually changed. CR gradually developed quite strongly, and a trace of breast & belly feather fluffing appeared, until finally the ♂ was giving his HCN's from a posture like this [[imgage]] This was ended by the ♂ flying away, feeding, relaxing a little. He is now just flying around with a few ordinary CN's These incidents weren't awfully illuminating; but they would indicate that the HCN is definitely higher intensity, without containing a relatively stronger escape component, than the ordinary CN. It was the ♀ who was making all the escape movements who gave most of the ordinary CN's. The ♂ may have given a few ordinary CN's from time to time; but he was stationary, in the