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Mixed Diglossini
May 3, 1965
Munchique

SEE TODAY'S NOTES ON GENERAL MIXED FLOCKS.

[[margin]] Gloriss? [[/margin]]  The Black Diglossa with humeral patches seen today must have been Brun, Laf, or [[underlined]] lafresnayei gloriossissima [[/underlined]] ("Gloriss").  Perhaps most probably the latter (according to the published records).

[[margin]] Gen [[/margin]]  In any case, it is obvious that the [[underlined]] lafesnayei-carbonaria s.l. [[/underlined]] group of Diglossas does not occupy the highest elevations here.  Probably because the highest elevations are too humid, and vegetation too dense.  [[underlined]] Carbonaria s.l., [[/underlined]] and even [[underlined]] lafresnayei s.l. [[/underlined]], to a lesser extent, seem to prefer vegetation from which they can emerge (for whatever reason) rapidly.  Either very dense vegetation if it is low (as in the scrub just below paramó in many areas) or relatively open vegetation if it is high.  The area where the Black Diglossa was seen today was covered with vegetation which was neither high (with little or nothing above 10 ft) nor very dense (in some places bushes were close together, but these bushes had relatively thin branches and relatively few leaves).  Rather remarkable if the Black Diglossa was either Laf or Gloriss.  This is about as open vegetation as any I have seen inhabited by [[underlined]] lafresnayei s.l. [[/underlined]]

[[margin]] Gloriss Brun Bari [[/margin]]  If the bird seen today was a Gloriss, and if this area was typical of its habitat, I can understand why this form is chestnut underneath.  Like the chestnut-bellied forms of [[underlined]] carbonaria s.l. [[/underlined]] and [[underlined]] baritula s.l., [[/underlined]] it must live in much more open areas than the dark bellied forms of the same species or species group.

[[margin]] Gen [[/margin]]  Probably, I confused "open" with "dry" in many of my earl