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[[underlined]] Cyanerpes [[/underlined]], Mar. 22, 1958, III [[circled]]69[[/circled]] toward him by first doing a lot of G which only gradually turns into an SR. I.E. he first does a G with wide open bill, in a sort of semi-St-semi-H pattern; (head rather low on the whole but bill definitely inclined obliquely upward); and then his tongue gradually becomes visible, his tongue and mandible begin to vibrate, and the squeaky SR gradually becomes audible (I should think, perhaps, from this sequence, that the G contains a stronger escape element than the SR). This relationship between G and SR is certainly reminiscent of the relationship between G and WGN's in the ♀ Blues. All the cases I have seen (and there have been a lot more during the period I have been writing these notes) have petered out without further developments. The ♂ seems to get discouraged and eventually moves off. The only unusual variation in this procedure that I have seen was once where the ♀ responded to an E St & Bzz by the ♂ by giving SR in a "hanging" flight int. mov. posture. Comme ça: [[drawing of bird]] This would seem to indicate that the SR itself contains an appreciable escape element Which I would expect anyhow. When I first saw this SR & H pattern I thought that it was probably largely or completely sexual. If so, it's form is certainly unusual for a passerine. But I now think that the sexual component, although almost certainly present, may be weaker than the hostile component. Certainly, it is the H & SR by