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141

Ramphocelus, Apr. 28 1962, VI             

These RR's or HAC had only the slightest possible rattle undertone (perhaps none at all).

Again & again male utters RR (HAC)-R patterns often jumbled whenever he happens to find himself close to the female.

He is certainly capable of uttering quite as well-formed R's as any wild male I have met. He just doesn't utter them as relatively frequently as the particular wild males I have watched.

Not all these vocalizations are accompanied by forward crouch postures.

Everything calm & dull again 9:30 a.m.

Then both birds suddenly start to fly about, uttering TssN's. Apparently in response to NN's of a wild Yellow-rump or dangre[[?]] in distance. Very excited. Then calm down a little. Captive male utters a few single NN's and then shuts up.

This incident would confirm that TssN's are hostile. Would suggest that TssN's are higher intensity than NN's.

9:37 a.m. Again male lands beside female. Utters brief RR-brief R as he lands. No other display.  No female response.

Both birds vibrating wings, shuffling, preening,etc. after bathing. Male suddenly flies to female, apparently tries to land on her back.  Apparently rape attempt! Male utters R-RR-RR-R as he makes attempt. Obviously unsuccessful. Male flies away, silently.

Male starts to fly about and utter single TssN's when monkeys come close again 9:42 a.m. 

Female lands near male. Male immediately utters R-eeyah (or RR) - R- eeyah (or RR) - R-eeyah (or RR). Female advances toward him with G. G apparently silent. Male flies off. 9:45 a.m.

Male suddenly flies to female. He utters RR-R-eeyah-R-eeyah. Female