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8
Mixed Diglossini, Sept. 19, 1962, III 

[[left margin]] Albi  Bari [[/left margin]]
I am beginning to think that Albi and baritula may be quite closely related.

[[left margin]] Albi  Glor [[/left margin]]
I wonder if the fact that Albi and Glor are competitors here may be functionally correlated with the fact that they seldom or never sing now. If so, how?

[[left margin]] Albi [[/left margin]]
Albis certainly appear to be very mobile now.

[[left margin]] Cy [[/left margin]]
7:35 Back to "pocket". Single cyanea singing repeatedly in intervals of feeding on flowers in top of small tree. Songs more or less "Tuck tuck tuck trurrrrrrrrrio" [[r's sound drawn as waves in a bell-curve]]. Usually 3 or even 4 preliminary notes. Twittering phrase rises before end and then falls at end.

[[left margin]] Cy [[/left margin]]
This bird certainly seems to be in full song. Is the habit of singing during the non-breeding season characteristic of the less specialized Diglossini (e.g. Coereba)?

[[left margin]] Cy [[/left margin]]
It is my impression that the cyanea here are feeding on flowers relatively more frequently than the cyaneas at Nono.

[[left margin]] Albi [[/left margin]]
7:50 A single ♂ Albi uttered a long and harsh R when landing near me to feed on flowers about 3 ft. from the ground. Presumably directed to me? Then uttered a couple of "Tsit"s and flew away. A minute or so later, a ♀ or juv. probably Buff-throat landed and fed on same flowers.

[[left margin]] Albi [[/left margin]]
8:09 am. Back to A Glor area. Notice Albi ♂ perched on exposed twig about 4 ft off the ground and 10 ft from me Uttering R after R Fairly high "Sreeeeeeeeee" [[drawn image of sound waves under e's]]. A few seconds between each R. Rhythm quite regular. Bird standing in apparently unritualized posture. Head more or less horizontal. Body and tail diagonal. Tail rising slightly (but not as far as horizontal) during course of each R. Bird then hops up bush two or 3 ft, pausing in several places to utter