Osprey birds of prey in California and Florida, updated 05.10...
A joke was making rounds among San Diego boaters in the spring of 2007:
“If the owner of this rig ever wants to take to sea again, he’ll have to
leave his mast behind.”
Ospreys, just like Bald Eagles, nowadays nest where man leaves an opening.
In the absence of dead or broken off tree trunks, the top of a mast
as this one in the harbor of San Diego's Mission Bay will do just fine.
“Thank You, Mr. Yachtsman.”
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Seven page photo report about Ospreys, with 30 photographs of nesting
Osprey families, adult birds as well as hatchlings and fledglings.
Plus a mating sequence on the Osprey Scoop page.

Natural and man-made nests in Florida. Big nest (see above) on top of a
boat in Mission Bay, San Diego. Ospreys in flight and with fish just caught.
See The Catch, a fine art print, in the BirdClix.com online gallery.