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[[underline]] Cyanerpes [[/underline]], I (40)
February 6, 1958 Barro Colorado

Both juvenile captive Blues have been giving a lot of WS's this afternoon. Much as before Bill [[underline]] absolutely closed [[/underline]] throughout all the performances of both birds. Both usually sitting in a very low [[?]] briefluff posture (with crown feathers raised as usual) Occasionally associated with preeding and other comfort movements, but not frequently enough to prove that the associate was "significant". The older juvenile occasionally interrupted song with single HCN's (provoked by some stimulus outside cage?); and sometimes sang in a slightly more rigid, more "typically song-like" posture than the younger juvenile. comme ça: [[image]] Extremely elongate WS Posture
Again none of this seemed to provoke any particular response, or lead to any particular activity by the performing bird, (although I should add that both the young Blue Honeycreepers seem to have been a little more active than usual this afternoon - flying back and forth suddenly across the cage.)

Whenever (or very frequently when) a wild bird joins another (no matter what sex) one or both birds may briefly point the head & bill upward. Without obvious signs of ritualization (except for a CR which may or may not be present in almost any circumstances). This might be a very weak form of St; but I rather think that it is nothing more than an int. [[?]] of sizing up (The captive birds also do it sometimes; but more rarely