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Gary Blond requested information on breeding
Ospreys. I studied this species as a Master of Science project and a number of
papers are in the pipeline. A paper on diet is presently with the editor
of Emu and papers on breeding biology and feeding ecology are being
finalised.
To answer Gary's questions, Ospreys incubate their
eggs for 36-39 days, the nestling period is between 52 and 76 days.
Fledglings remain with the parents for a few months after which some remain
within a few kilometres of their natal area and others travel long
distances. A bird that I colour banded at Woodford Island, near Maclean,
NSW was photographed by Neil Fifer at Narrabeen Lake, some 504 km to
the S, 1 year 10 months and 21 days after banding. Adults generally remain
within their nesting territory but wander more than when nesting.
Regards
Greg
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