Viewing page 51 of 74

This transcription has been completed. Contact us with corrections.

[[circled]] 50 [[/circled]]

Tangara, Mar. 25, 1961, V.

[[left margin image-3 vertical grey lines and 1 vertical grey cross-hatched line]]
re more strongly hostile and/or more aggressive

[[left margin image-3 vertical grey lines and 1 vertical grey cross-hatched line]]

Then, suddenly, "social" feeding began. One of the birds was fed twice by another (or the others), or two birds were each fed once. I couldn't tell which bird(s) were fed or which did the feeding The bird(s) being fed assumed St & TV postures, with wings slightly drooped but not spread or Q'd, just before being fed. Their St & TV postures were quite extreme. Comme ça:

[[image - drawing of a bird]]

The bird(s) doing the feeding did not assume any special ritualized posture or perform any special ritualized movements Both the feeder(s) and the fed bird(s) were either silent during this "social" feeding and/or uttered "zreeee" Notes just before and/or just after being fed.

The fed bird(s) remained with TV for some seconds after being fed; but it or they went out of the St immediately. During most of the period the fed bird(s) remained in TV without St. it or they were certainly quite silent. Wings remained drooped as long as TV continued.

A few minutes later I saw another case of "social" feeding. This time the A birds were alone; the third bird having disappeared. Presumably the male feeding the female. The 2 birds landed together, uttering CN trills. Then one fed the other immediately. No display of any sort just before, during, or just after this "social" feeding.

The absence of BC's may be typical of "social" feeding in pairing and/or sexual situations.

[[left margin image-3 vertical grey lines and 1 vertical grey cross-hatched line]] 

I did not hear any SN's uttered by the A birds today probably