Viewing page 662 of 751

This transcription has been completed. Contact us with corrections.

                                       76

 (?)      I.           October 29, 1960
                       Barro Colorado

  We tested the chicks of the third clutch, in the usual way,on October 23rd, 25th, and 28th, in the afternoons. On the 23rd, they were both silent throughout, except that one uttered a few Alp (?) chirps when caught. On the 25th, one was silent throughout, while the other uttered ALP (?)-chirps when caught and when struggling in the hand. On the 28th, they were both silent throughout.
  During the night of the 27th, I heard lot of loud LC notes coming from the cage in which were the chicks of the 3rd clutch and their parents. Almost certainly being uttered by the chicks. I then heard more LC notes on the morning o the 28th,interspersed with bursts of P (?) which may have been a form RP. Again presumably uttered by the chicks. I don't know what the disturbance was that cause all this commotion. The birds shut up whenever I came close to the cage.
  On the afternoon of the 28th, we took the two chicks of the 3rd clutch away from their parents, and put them in a separate, small, outside cage, about 30 ft away from their parents' cage. The chicks spent most of the afternoon after their transfer uttering long & loud LC notes. Quite like those of young chicks, except much louder.
  These chicks of the 3rd clutch are almost full-grown now, but their legs and bills are still dull (although a patch of yellow is beginning to appear on the upper mandible of one of them.)
  I led the only bird of the record clutch go about a week ago. It is still in the neighborhood, however.
  I finally caught the birds of the first (?) clutch trumpeting on the afternoon of the 28th. This trumpeting was quite like that of all the adu