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[[ circle]] 60 [[/circle]] idity. (An indirect adaptation - primarily a means of surviving in dense vegetation. Especially forests.) September 5, 1965 Paramo Zumbabdor Going to work in the same area this morning. Arrive 6:09 am. Just getting light. This is just within lower limit fog level this morning. Cool. Little wind. First few miscellaneous bird sounds ca. 6:12 am Then Lafs begin to sing vigorously (described elsewhere). But there is very little, or nothing, else in the way of [[underlined]] early [[/underlined]] bird song. I.E. [[underlined]] most [[/underlined]] of the species here (apart from Diglossas) probably are [[underlined]] not [[/underlined]] in breeding condition. 6:44. Hear [[underlined]] nigrocristatus [[/underlined]] Rattles and Flourishes approximately same place where species first seen yesterday morning. Low in AS. Then, 6:52 am., pair PL's appears 50 ft downhill. Also low in scrub. Uttering occasional "greeting". Moving gradually uphill in direction of [[underlined]] nigrocristatus. [[/underlined]] I.E. it looks as if flock is forming! It would appear that the [[underlined]] nigrocristatus [[/underlined]] from the "original" nucleus of the "first" mixed flock here. Fog lifting 6:38 am. Lafs stop singing 6:59 am. And [[underlined]] immediately [[/underlined]] single Cy appears in area. Sings repeatedly. NODWAH. But overlapping [[underlined]] nigrocristatus [[/underlined]] Rattles and Flourishes at random. Singing from several perches in different trees 15 - 25ft up. [[underlined]] At same time [[/underlined]], at least 1 White beard and 2 Little Striped flycatchers appear in same general area. 6 - 15 ft up. [[underlined]] All 3 species congregate near PL's. [[/underlined]] Then the [[underlined]] nigrocristatus [[/underlined]], who