re: Osprey polygyny
"Dean Portelli" <>
Tue, 22 Jul 2003 14:31:07 +1000
With respect to Brian's observations of three ospreys and two nests. I
wonder if it could be a case of the offspring of the previous breeding
season hanging around with the adults before being evicted from the breeding
territory? That is, the third bird may not have been a breeding adult.
Secondly, the two nests may never have been used simulataneously. That is,
one nest may be a replacement nest for the other, which may have been
abandoned for some reason or another, yet the parents retained the same
nesting area. Alternatively, the birds may regularly switch the use of the
Of course this is speculative, but so is the notion that this sighting
involved polygyny. Although, it is interesting that it has been recorded in
the northern hemisphere.
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