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11

Aramides cajauea, I  
  
June 22, 1960
Barro Colorado

The birds seem to be getting along quite well now. Growing. Still don't like to feed themselves (if they can help it). When isolated this morning, they did not follow me as enthusiastically as they did a few days ago. Possibly because they haven't had much practice recently.

When sitting or standing peacefully in their cage, they usually utter Peep Notes, and nothing else. The Peep Notes uttered in such circumstances are relatively long, although always or almost always appreciably shorter than LC Notes. They are most like LC Notes in tonal quality, however. More so than otherwise similar Peep Notes uttered in association with Chirps or Trills (see below) when handled or poked or frightened.

Peep Notes still seem to [[?grade]] almost perfectly with Trill's. The birds also utter quite a lot of notes which are almost perfectly intermediate between typical Peep Notes and typical chirps. Surprisingly enough, in view of the tonal similarities between typical Peeps and typical LC Notes, intermediate between typical Peeps and Typical LC Notes are either relatively rare or non-existent.
 
I tried the usual series of tests on all 4 birds this morning,around 8:00 a.m. Also another test. Speaking to a bird isolated by itself in a box. A bird will often answer my voice in such circumstances. I shall call such answers "greetings."

The results of these tests were as follows:

WR Gave a few LC Notes when isolated. Uttered Peep Notes as greeting. Uttered a few chirps (not very extreme, i.e. relatively soft and not very harsh),followed by some Peeps, when handled. Gave very extreme chirps, i.e. very loud and harsh, when poked. At the same