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[[circled]] 5 [[/circled]]

Mixed Diglossini, Jan. 28, 1964, II.

[[margin]] Ater Laf [[/margin]] barriers is confined to these individuals alone. Possibly the Ater involved is young, having just acquired adult plumage. Possibly it is less discriminating than an older bird would be in the same circumstances.

[[margin]] CC Bari CC Ater [[/margin]] Working this afternoon at a place called Pomasqui. CC's seem to be common in this relatively arid area, just above San Antonio. The only diglossini present. (Why don't Baris occur here???). So it would seem that CC's are more "adaptable" than Aters (and that Aters are less adaptable than Brun's???)

[[margin]] CC [[/margin]] The CC's here are quite ruddy underneath. This seems to be characteristic of all the relatively low altitude CC's of the region. Are two subspecies (or even species ????) present in the region???

January 29, 1964
Atacaso

Going to work below San Juan today. Same place where Cys were seen a couple of days ago. Arrive 5:42. Dark & Cold. Everything quiet

[[margin]] Laf Cy [[/margin]] 7:10. a.m. Finally hear first diglossini song. A Laf Then some more Lafs sing.  Shut up after a while.  A few minutes later hear a couple of Cy songs.  Then Cy shuts up.  A few minutes later a Cy sings again.

[[margin]] Laf [[/margin]] 7:23.  Hear one Laf song with pronounced sub-terminal R.  Most of the Laf songs around here definitely do not have such a component 

Lafs stopped before 6:30.

[[margin]] CC Laf Cy [[/margin]] 6:34.  See single CC alone.  Silent.  In area where I saw a Laf the other day and where a Laf was heard singing today.  Not far from where Cy was seen the other day.

So Cys are [[underlined]] not [[/underlined]] the only competition for Lafs in this area!