Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1988 M. Stanback
4
M. Formicivorus
Volcan Irazu
(17 Mar) then move to another acorn nearby. The bird pecked a hole
in the acorn and looked to be eating it there, while
it was still attacked. This explains why I never see
birds carrying acorns, why I've seen no storage holes
(though I'm still looking), why all the eaten acorns
are under the tree, why the eaten acorns are
generally not finished (no anvils - they must just
eat til it breaks), and why all the activity
is in this one tree (you can't eat it at your leisure)
Birds seen flying off in several directions, including SW-
Looking at the curve oak, I see that, though most
of it has ripening acorns, some branches are
Flowering and putting out new leaves.
18 Mar 0930 while watching the curve oak, I see a woodpecker-
leaving with an acorn. It looked to be holding it
like [illegible], probably by an edge it pecked through.
0940 Saw bird leave w acorn, to same destination
I get the impression that, at any one time, there
are many partially eaten acorns hanging on the tree.
Birds peck at an acorn for several minutes, then
move to another (or are chased from their original)
They do seem to be eating, but I haven't seen a bird
pull out a big chunk of acorn meat. The birds are not
especially shy - they are willing to land and sit @
10 m From me,
0955 I break open @ 10 acorns and set them together
in the grass by the Fence. Will the birds come down?
(none removed by 1500)