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Florida Nature Tours wrote:

  Species that we think of as seed or fruit, or nectar eaters must catch
  insects to feed their young because even hummingbird babies need protean
  for their little bodies to develop properly.

Dr. Doug Levey of UF was the speaker at the GOS meeting earlier this month
on Jekyll Island, and he stated the fact that there is only 1 species of
bird (out of 10,000) that is *exclusively* frugivorous, i.e. it even
feeds its nestlings fruit (know what it is?).  This is in contrast to the
many mammal species that are so (but they have the advantage of
lactation).  However, he implied that it's probably not entirely accurate
to conclude that frugivores fall off the fruit wagon merely in order to
[and during the time when they] feed their young.  Probably, that wormy
apple is at least occasionally necessary for adult nutrition, too (I
would imagine during molt).

His data on winter frugivory by birds in S. Carolina was amazing--the most
popular fruit or "soft mass" was poision ivy berries, 99% of which were
removed from the vines by birds.

Brad
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Brad Bergstrom, Ph.D., Professor           TEL  229-333-5770 /-5759
Department of Biology                      FAX  229-245-6585
Valdosta State University                  e-mail: [log in to unmask]
Valdosta, GA 31698-0015                    Home: 229-333-0743
           Home Page-- http://www.valdosta.edu/~bergstrm/
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