Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
DuVal,
E.H.
2002
Journal
Isla Boca Brava, Chiriqui, Panama
14 Apr 2002
I found a nest with one chick, 2 days old
today - near the bottom of the FBE road (E-14).
Evidence that there's more nest-searching to
be done! I'll stake the nest tomorrow.
Again, the birds seemed particularly active
in the afternoon. Julie saw a near-copulation
act BTR that included 2-male display. There
have been a surprising number of solo male
displays that were effective this year. So if
cooperation is not obligate, what are the conditions
that lead to it, or why does it exist?
Are females visiting perches multiple times,
or coming back to those they like to see solo
displays? Do we ever record multiple visits?
We have good evidence of "slipping" with BoB
moving between perches & ultimately copulating - but
it doesn't seem that her mind was already
made up if she visited several perches serially
before making her choice...
I saw the first ovenbird I've seen in a
long while today - foraging in the leaf litter
near SLN2