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48

Aramides cajauea, July 31, 1960, II   

shall call this third chick "WR2."

WR2 was uttering perfectly distinct "Wheeoo"s and "Wheep"s, like those of WH2, by 7:35 a.m. 10 minutes after hatching.

At 7:35, I also tried handling WH2 a little roughly. It just uttered "Wheep"s and LC notes. Another indication that the LC notes may be a generalized (?) reaction at this stage. (It is possible that WH2 uttered LC notes when handled because it was separated from its companion, WB2, but older chicks certainly do not utter LC notes when handled). Finally, it uttered a single chirp, after the handling had continued for several minutes.

Immediately afterwards, I put WH2 back on the floor of its box and started to poke it. It responded by uttering many loud, apparently high intensity, chirps.

Around 7:40 a.m., I noticed that WH2 notes have definite quavering or trilling quality now. This is probably not because they are particularly closely related to "real" trills. WH2 was uttering these quavering LC notes in its box, when it was more or less separated from WB2.

Surprisingly enough, the chirps, P's,and LC notes of WH2 seem to be quite well segregated at the present time. It has little or nothing like the "intermediate" PP and AlP patterns of older chicks.

At 1:05 p.m,I tried poking both WR2 and WH2. Both reacted in the same way. Crouched feet on ground, head down & resting on the ground, and uttered loud chirps.

I tried poking WH2 again at 9:00 p.m. this evening. It reacted much less vigorously. Just squatted down, without lowering its head very much, and  uttered "Wheep" type P's