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15
Ramphocelus, Mar. 12, 1958, II               

rump. Always brief and quite undistinguished in sound.  Apparently given from a quite unritualized posture. The performing bird just faces its opponent. Apparently threat, but I can't be absolutely sure of this.

Once an R was followed immediately by  a "cha" Note. The circumstances were quite reminiscent of the Rsps of chlorophanes [[best guess]]

In case I have forgotten to mention it, I should note that the CN's are seldom or never given now, by any bird of either species, except in flight.

Well! Well! More surprises all the time! This noon I am sure that I caught the captive "female" Sangre de Toro giving a WS! Very very soft -  like the softest parts of the WS of the young Blue Honeycreepers. The bird was just sitting in a semi-fluffed relaxed posture (quite erect) - as usual. Also making the "peering," looking irregularly from side to side and downward, movements which are also characteristic of young male Blue Honeycreepers during their WS's. Some very very slight bill movements from time to time, and quite definite tail movements most of the time.

This would certainly suggest that my "female" is a young male. This might explain why "she" hasn't warmed up to the older captive male. It also further emphasizes the resemblances between this species and the Blue Honeycreepers.


Ramphocelus

March 13, 1958
Barro Colorado

I got rid of the lavender right Yellow-rump today.