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[[circled]]29[[/circled]]

[[margin note in red]] Cy [[/margin note in red]]
[[margin note in red]] Gen [[/margin note in red]]

the Western Andes here because the area is generally unfavorable for Diglossini (wide ranges of [[underlined]] carbonaria [[/underlined]] and [[underlined]] lafresnayei[[/underlined]], possibly the rarity of [[underlined]] albilatera [[/underlined]], apparent absence [[underlined]] Conirostrum [[/underlined]], etc.)  It could be a general rule that species show inter-specific gregariousness whenever conditions are not very favorable, [[underlined]] i.e [[/underlined]] in regions where they themselves are rare.  But the BCBT's in Chiriqui would seem to contradict this (as a [[underlined]] general [[/underlined]] rule).  Possibly species tend to develop inter-specific gregariousness wherever they do not have may close competitors??? (Probably there are more hummingbirds near Quito than anywhere else I have watched Diglossini.) It is also possible [[margin note in red]] Cy [[/margin note in red]] that the whole Cy situation is due to the fact that Cys have a special inter-specific preference for Blue and Blacks.

[[right justified]]
November 4, 1962
Munchique
[[/right justified]]

5:55 am. 8300 ft. Weather clear today.

Pair of Blue and Blacks feeding in tree along road. About 20 ft. above ground.  Pair of thrushes in same tree. Difficult to tell if they are associated or not.

Blue and Blacks utter single "Tsit"s, and short series of such notes, in addition to "feeee"s and "feee-seee"s.

Thrushes move in different direction from Blue and Blacks.

6:05  Now see 3 Yellow-faced Redstarts in tree next to Blue & Blacks, about 20 ft away Then Blue & Black j [[arrow pointing right]] Yellow-faces Then Blue & Blacks move on without being followed.

This pair of Blue & Blacks is [[underlined]] not [[/underlined]] very nuclear!