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Mixed Diglossini, Apr. 8, 1965, IV     (80) 

[[left margin]] XCC [[/left margin]]
5:18. See single XCC in small tree, only 15-20 ft from Erythrina. NOD (not even in Erytherina itself) XCC apparently probing for insects in forks and crevices. Silent. Definitely alone. 
Leaving 5:25 pm.
COMMENT:

[[left margin]] BG XCC [[/left margin]]
I. It must be significant that neither BG's nor XCC's visited the Erythrina this afternoon.
II. I presume the reason that no Albis are present in the Chorros de Milla area is that the vegetation is too open and scattered. Certainly, the area appears to be humid enough. See below

[[left margin]] Gen [[/left margin]]
This leads to a general conclusion. Possibly carbonaria s.l. ssp and baritula r.l. ssp. occur in drier areas than lafresnayei and albilatera not because they prefer or tolerate drier climates but because they prefer or tolerate more open and scattered vegetation. 

[[left margin]] Cy [[/left margin]]
Possibly Cys are absent from the Chorros de Milla region for much the same reasons as Albis. I.E. the trees are not continuous enough.

April 9, 1965
Pico de Espejo

SEE TODAY'S NOTES ON GENERAL MIXED FLOCKS
(Song of Cy).
NOTES:

[[left margin]] XCC [[/left margin]]
I. Looking over my notes, I think that the bird that I saw at Chachapoyas and called "Basileuterus LXI" may