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Mixed Diglossini, July 17, 1965, IV.  (70)

^[[Albi]] NOTE: The Albis seen today have [[underlined]] not [[/underlined]] been in scrub under tall trees. This is not surprising, in a way, as tall trees are very scarce and scattered here.

^[[Albi Coer]] Similarly - although the Coer(s) has (have) been seen in fairly high trees - they certainly are not separated from Albis by complete or perfect stratification. The Coer seen feeding on berries certainly was low and in what appears to be perfectly typical Albi habitat here.

^[[Albi]] A few more Albi Songs 10:05 am. NOD

Leaving 10:20 am

SUMMARY AND COMMENT:

^[[Albi Coer]] To my recollection, this is the only area I have visited where the combination of Albi and Coer is dominant.

The vegetation here is rather distinctive. Mostly thick scrub of moderate height. Perhaps not as thick as some scrub just below the páramo level in some other parts of the Andes - simply because the bushes are not encrusted with lots of epiphytes and parasites - but the bushes themselves are very close together.

^[[ [[underlined]] carbonaria [[/underlined]] ]] The area as a whole [[underlined]] looks [[/underlined]] very suitable for [[underlined]] carbonaria [[/underlined]] s.l. But I certainly did not hear any traces of [[underlined]] carbonaria [[/underlined]]-like Song . Perhaps the area is too humid???? (It doesn't look extremely humid to my eyes - but this appearance probably is deceiving. It always is difficult to detect the signs of extreme humidity at relatively low altitudes in non-forested areas - largely because of the poor development of epiphytes and parasites. Certainly the presence of albis and Coers would support the theory that the area is very humid. This also is what I have been told by Alvarez.)

Possibly extreme humidity is the reason why [[underlined]] carbonaria [[/underlined]]