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[[underlined]]Cyanerpes[[/underlined]], Mar. 22, 1958, II      (68)

soft but also very high-pitched and squeaky. Her bill is held quite widely open diving both the plain raft and squeaky SR’s, and her tongue is partly raised, at the base, so that the inside "angle" is quite conspicuous (see drawing on previous page.) Both her lower mandible and the tongue vibrate conspicuously rhythm with the call.
The 2 birds may sit side by side doing this for several seconds. The ♂ may interrupt his E St’s and Bzz’s to peer at the ♀, silently, or even make a more or less gentle poke toward her crown, cheeks, or chin. This [[underlined]]looks[[/underlined]] very much like an attempt at mutual preening! But the ♀ has never responded in what I presume would be the right away - as yet. The ♂’s peering and poking seems to irritate her, and she usually responds by turning her head toward him, continuing the SR, sometimes making a few tentative jabbing movements (Even when the ♂ doesn’t begin to peer and poke, the ♀ usually interrupts his E St’s and Bzz’s in the same way)
The ♂ may respond to these actions by the ♀ in any one of several different ways. He may hop back a fraction of an inch, stand a minute, and then fly off. Or, most frequently, he may remove his E St’s, with Bzz’s, after a momentary pause. Or, less frequently but not really uncommonly [[underlined]]he may go into an H & SR pattern too[[/underlined]]!!! The  2 birds may then sit side by side doing more or less the same thing. His H seems to be essentially identical with hers, and so is his SR in most respects. But I think that his SR usually tends to be even squeakier than hers. And he often responds to her apparently irritated turning
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