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Tangara, Mar 23, 1960, II

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Three birds uttered lots of CN's during feeding, both when perched and when flying from tree to tree. Eventually single, but sometimes repeated in series of up to 4 or 5.

They also uttered many calls which sounded like accelerated series of many CN's. Sounded almost or completely identical with the CN Trll's of the Plain-colored Tanagers. We never actually managed to see a bird while it was uttering a CN Trill; but we are fairly certain that the CN Trll's are only uttered when a bird is perched, not in flight. In this respect, the CN Trill of this species is more comparable to the R of the Golden-masked.

It may be significant that these Speckled Tanagers were in a group of 3 during the period in which the uttered their CN Trll's and R's (we do not know if all 3 were Speckleds  - but at least 2 were) Later on, one bird separated from the others; and after this we heard no more CN Trills or R's! This might be evidence that the CN TRLL'S or R's are eventially  [[eventually]] hostile.

We also saw a pair of Speckled Tanagers this evening (in the usual place, probably the same pair as this morning) Feeding fruit by themselves and then in a mixed flock. Uttered lots of CN's, single or in series, but no trace of CN Trll or R.

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It is fairly obvious now that the Speckled Tanagers here are definitely less gregarious than the Silver-throats (see below). They are often found in mixed flocks, but they also go off by themselves a great deal. (When we have seen them, they have been feeding on the same fruit that the Silver-throats feed on, irrespective of whether they are in a flock with Silver-throats at the time or not.)

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The gregariousness of the Silver-throats here has greatly surprised me. We have not yet seen them when they were not associated with

Transcription Notes:
Golden [warbler]? Golden [marbled]? it looks like her other lower-case m's. At least one other occurs near the bottom of the document. Golden-masked is the name of the species the author is referring to