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32

Atlapetes, May 30, 1960, IV.          

These birds had CR when we watched them.
   
Once, when one bird flew and landed beside the other, one or both birds uttered the "Greeting" "Zee wee zee wee zee wee..."
   
I have never seen any Yellow-belly perform ritualized Bowing or Pivoting or TV when alarmed. They may cock the tail a little, or perform comparatively slight and irregular bowing or pivoting movements; but all these patterns appear to be quite unritualized in form.
   
I have never noticed any Thf of the Yellow-bellies either.

Atlapetes, I.  
   
May 31, 1960
Cerro Pichincha                               

We did most of our work near Nono today (see today's notes on Diglossopis). This is 500 to 1000 ft lower than the other area where we have made our previous observations on Pichincha.
   
Yellow-bellies are surprisingly common near Nono. Both in the hedges on the edges of the road and cultivated fields, and in the heavy vegetation of the ravine of the river. There is at least one pair of Black-heads here also, in the lower margin of the shrubbery above the cultivated fields.
   
As a result of watching both species quite a bit today, both near Nono and in the area where we have worked before, I can corroborate my previous impressions of the habits of the 2 species. All the Yellow-bellies I have seen have been in bushes or low trees. Never feeding on the ground. But I have never seen Black-heads feed anywhere except on the ground. We have frequently seen them feeding on almost bare paths. The 2 species would seem to be strictly non-competitive.
   
Both species are also completely non-gregarious. Always or almost

Transcription Notes:
Nova changed to Nono as on on earlier pages https://en.wikipedia.org/wiki/Nono,_Ecuador Diglonopis changed to Diglossopis https://en.wikipedia.org/wiki/Diglossopis