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66
Tangara, Jan. 31, 1962, IV 

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When the parents appeared and flew to the nest with food. At the same time, a whole burst of "Sreeee sreeeee sreeee sreeee sreeee...." notes was uttered Very fast much the same as the "Sreeeee" notes heard when the parents flew to the nest on January 28th, but the individual notes were probably somewhat lower and shorter. Also at the same time the young bird opened its bill very widely, began Q, and assumed TV. The parents fed it repeatedly. It continued Q & TV before and after all the feedings. The notes also continued throughout the whole procedure. 

Then the parents flew away again. The young bird resumed behaving as before. The parents came back again, and the whole feeding-food begging process, with accompanying displays, was repeated in exactly the same form as before. 

On both January 28 and 30th, I was sure that the "Sreeeee" notes uttered when the parents visited the young were uttered by the young. But looking over my previous notes, and my accounts of adult birds uttering Sreee notes during nest-building. I have begun to be assailed by doubts. In any case, the whole problem of Sreee notes must be studied more carefully. 

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The young bird was still on the nest, still begging and being fed, at sunset on January 30th. But this morning it was gone shortly after sunrise. Probably natural departure

Tangara, I

February 1, 1962
Barro Colorado

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The young bird described above now seems to lie in a clump