Viewing page 600 of 751

This transcription has been completed. Contact us with corrections.

14

Aramides cajauea, June 24, 1960, II        
                  
their experiments, while uttering only 1 chirp and no Trills or LC Notes, would suggest that the Peeps are lower intensity, on the average, than any of the other notes. It might also suggest that the Peep is a generalized distress pattern. (The only other plausible explanation of U's behavior today is that it was frightened - for some reason - and that fear inhibits all the other calls but not Peeps. This seems to be much less likely). 

Aramides cajauea, I

June 24, 1960
Barro Colorado

The behavior of the birds has changed surprisingly little. 

They are now shyer and more "skittish," more apt to break into sudden panics, than before. This may be an inevitable development, but it may also be due to the fact that I have been paying relatively little attention to the birds recently. They may have "forgotten" me.

They still utter Peeps when all huddled together.

We tried the usual series of tests on them immediately after lunch. 

WH. Remain silent for a long time when isolated (in a dark box). Finally uttered an occasional Peep after being isolated for at least 5 minutes. Then uttered a few Peep as greeting. Then, after being isolated (in the dark) for several more minutes, it finally uttered one LC Note. Then it uttered chirps when handled. Then it uttered quite a lot of LC Notes when isolated again (in the light). Then it uttered Peeps when following me (it did not follow me well, or for a very long time, but it did at least attempt to follow me occasionally). Then it uttered Peeps and Trills when poked. (Some of the Peep Noted