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Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1980 R.L. Mumme
6
Melanerpes formicivorus
Plaque
(14 April) I also thought I saw the tail end of a dominance
interaction between ♂473 + ♀521, ♂473 pecking, ♂521
chattering. However, I was not sure. Birds hanging out on
"Adobe Hill"
15 April Start watch 0540. ♀496 definitely seems like an
adjunct group member. 0600, she garricks in Big
Blue Oak toward lower bank, ♂521 + ♀494 fly over
there, and both seem to mildly chase her, then tolerate
her in the Blue Oak. All 3 return to granary, waiting,
but ♂521 chases ♀496, ♀494 following. As soon as
♀496 away from granary, chasing subsides. 0720, Everybody
in Blue Oak, looks peaceful. All fly to granary, ♂521 chases
♀496 again. Does not like her in the main area. 0740
Dominance!! ♂473 a gentle peck to ♂521, returns
head. This occurred in the armpit of the next tree. both ♂♂
were at the top, ♀494 was below. ♂521 is not tolerant
of ♀496 in the granary, so perhaps ♂473 will encourage him
to accept her. End 0745. 0750. More dominance!! ♀494
probing leaves, ♀496, perched nearby, flies directly at her
scrap! This occurred in the Big Blue. 0805. for
awhile, all 4 birds together, then a big confusing scrap,
then all 4 together again.
S. Wishimura thought
♀494 chased
♀496 which
takes more
sense by
latter watches
Sandy reports another ♂473 ♀596 copulation at
roosting on 11 April, See her notes.
17 April Start 0720. Things have still not settled down here.
♀476 relegated to far reaches of territory, even garricks twice
both Big
in Blue Oak, the Griffin sycamores, and numerous times up