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Atlapetes, Apr. 11, 1961, II. (43)

A couple of days ago I surprised a Yellow-throat in a thicket standing in an extreme St. Posture. Quite like the posture drawn on Oct. 26, 1960, p. 38, but throat more fluffed (evenly rounded in outline). This posture may have been intermediate between the St. Posture drawn on Oct. 26, 1960, and the posture drawn on Mar. 12, 1959, p. 4. No CR. The bird was definitely quite silent as long as it remained in this posture. Then it flew off and disappeared from sight.

I don't know if this St. was provoked by me or by some other bird(s) in the neighborhood.

This afternoon, much to my surprise, I saw 3 Yellow-throats moving about together, without any signs of hostility. Does this mean that some birds of this species breed at different times of the year here?

I also surprised one bird in a bush. It stood quite close to me, uttering lots of hard "Tsit" CN's. Performed a number of irregular and unritualized-looking bowing and pivoting movements. All this with just slight CR and Thf.

Atlapetes, I.

April 13, 1961
Cerro Punta

I came across of pair of Chestnut-capped Atlapetes early this morning. In a thicket about half way between the upper pasture and Cerro Punta. I shall call this pair "A." They seemed to be quite tame. Spent most of their time feeding quite close together.

During feeding, they flicked leaves aside with their bills and picked at food with their bills without flicking. No scratching hops like Pezopetes.

Most of the time I watched the birds, one or both uttered faint 

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