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Mixed Diglossini, May 9, 1965, VI. (9) ^[[Laf Ater]] now I am quite [[underlined]] certain [[/underlined]] that dispute was Laf-Ater. ^[[CC CC Ater]] It is interesting that CC should appear in same general area as Ater. Altho this area certainly is not drier, and the scrub is not thinner or lower, than elsewhere around here. Don't tell me CC is a "commensal" of Ater??? (This might help to explain how it has evolved different-looking social habits from other montane [[underlined]] Conirostrum [[/underlined]] spp.) There is some rain now, 9:35, but [[underlined]] very [[/underlined]] light. Hardly a sprinkle. ^[[Laf Cy CC 124]] Hear Laf ^[[checkmark]] singing in distance. Walk over, and discover that bird is singing from same tree where Cy seen earlier, and from which possible CC Songs came from! ^[[Laf Cy]] This Laf and the Cy seen here earlier almost certainly different individuals from the ones whose territories were found to overlap earlier. So Laf-Cy territorial overlaps may be regular in this region. ^[[125 Cy]] Another area, 9:53, see single Cy ^[[checkmark]] alone. In tall bushy tree. 10 ft above ground. Silent. NOD. ^[[Laf]] Laf still singing down by road 10:00 am. Leaving 10:17 am. COMMENTS: ^[[Gen]] I. I must say that the results of my observations here, so far, have been rather surprising. The species of Diglossini here seem to be the same as near Quito; but their reactions to one another seem to be more like those of the (partly different) forms in the Eastern Cordellera. ^[[Gen Cy Laf Ater]] II. A thought has just occurred to me. Possibly the absence of [[underlined]] carnobaria s.l. [[/underlined]] Songs in the neighborhood may be a factor contributing to the frequency of overlaps between Cy and Laf songs both here and in the Eastern Cordellera????