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27

Atlapetes, May 27, 1960, II.

repeated once, immediately (there was absolutely no pause between the successive phrases).

This afternoon I also got my first good view of another species which is almost certainly Atlapetes assimilis (= [[brown shading]]) (I caught a few brief glimpses of a pair of the same birds last year - but too briefly and too obscurely to determine what they were.) This bird looked approximately comme ça:

[[image]]
Very Pezopetes-like in general effect.
Big-bodied.
Head black & slate gray. (The exact arrangement of black and gray shown in this drawing may be slightly incorrect - as it was difficult to see in the light available this afternoon.) Very conspicuous white throat. Upper parts olive. Underparts gray, fading to olive posteriorly.

The only interesting patterns I saw this bird perform today were flicking movements. V-D TF's with a strong lateral component. Also WF's. These WF's were rarer than TF's; but when they did occur they were synchronized with TF's.

This species is much more like the Atlapetes spp. at Cerro Punta than like the Yellow-belly in general habits. Skulking. Moving on the ground or in low bushes. Comparatively silent (I have yet to identify any of its calls or notes.)

In case I have forgotten to mention it above, the Yellow-belly is not only comparatively noisy but also non-terrestrial. It is a bush loving species. I have yet to see it move on the ground; but it is usually found in bushes 2-10 ft off the ground.

Transcription Notes:
Now known as Arremon assimilis. [[image - drawing of bird]]