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(?)          October 13, 1960, I.       75

hand, both when struggling and when passive.

(?)    I.    October 16, 1960
             Barro Colorado

  Tested chicks of 3rd clutch at 2:10 p.m.
  Both were silent when chased.
  The first remained silent when caught and when held in the hand, both when struggling and when passive.
  The second uttered AlP - chirps when caught. Silent when passive in hand. AlP -chirp's when struggling.
  (It seems very likely that we have caught the chicks in different order on different days of testing).
  They are both well-feathered now, except on the heads. Their (?) are so well-developed that they can almost fly.
  I have not heard them utter any LC notes since my return from (?) on Oct. 11.

 (?)     I.     October 20, 1960
                Barro Colorado

  We tested the chicks of the 3rd clutch, on Oct. 18, right after lunch and today right after lunch. On Oct. 18, they behaved just as before. Today, they were both (underlined) silent when chased, silent when caught, and silent in the hand, both when struggling and when passive.
  This evening, from my house, I could hear that one of the birds of (?) clutch uttered lots of ordinary P's (just about the time of day when they used to utter LC notes.)