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Thread subject: Another perhaps naive question
Name Date Message
Shelley 04/29/07 06:57 am I've heard it mentioned that there are many nests, both occupied and empty, in the area and also, that the availability of fish is good. So, regardless of who the attackers are -- offspring returning to their birth home or seasoned osprey whose own nests were perhaps destroyed in a storm, or whatever -- why would they try to oust an occupied nest and a brooding mother, if they can easily find and use an empty nest with good access to food?

Sorry for that run-on sentence but it's Sunday and I am offically off-duty as a teacher today.
Tiger 04/29/07 07:03 am Ospreys seem attracted to successful nests. I pointed out that at Rutland there is one one viable nest. When the incumbent couple migrated last August/September some of the other males moved in despite them having their own nests (devoid of females of course). Maybe it is the pheromones.

See The Take-over job

Also see squatters rights on the same page.
Celeste 04/29/07 07:10 am This can only be the reason. The wagon wheel near the DPOF has only a couple of twigs on it. This nest is really quite big, and then there is that perching tree nearby....also, who knows if the perch and the cam are a draw also.
Tiger 04/29/07 07:12 am I think that to a male osprey a nest is great......a nest with a female......that is heaven.

Shelley 04/29/07 07:36 am Thanks for this, Tiger. Yes, I know you are probably right.

So, what's the excuse for these female intruders...?
Anne UK1 04/29/07 07:57 am Celeste that's an interesting comment about the cam and perch. Tiger, the nest at Rutland - did that have a cam on it?
Tiger 04/29/07 08:00 am Yes the Rutland nest did have a cam but not the streaming video up close type.

Of course the great news from Rutland is that the old boy 08 (97) has found a young mate and is currently sitting on eggs. There is a vido cam on that and there is a link on the Rutland home page.

june 04/29/07 08:45 am Thanks Tiger. That Rutland site is really worth remembering and gives a lot of insight. How does one catch an osprey and tag it?
Tiger 04/29/07 09:27 am June ospreys are normally tagged as chicks before they are able to fly so that is quite easy.

Catching a full grown osprey and tagging it (as has been done with satellite transmitters) is a whole different matter. It involves great horned owls and nets. I will seek out a reference if you are interested.
Anne UK1 04/29/07 11:38 am Thanks Tiger. I was thinking more of if having a lofty perch right above the nest makes it a more attractive site as per Celeste's remark. Probably not, but it's an interesting thought.
june 04/29/07 11:47 am Thanks Tiger. I assumed they would be tagged as chicks, but I can't imagine mom & dad allowing anyone to get close to the nest to accomplish this.
Tiger 04/29/07 12:17 pm Well best ask Celeste or Melanie they been on banding trips.

See Banding trip
Celeste 04/29/07 12:47 pm The parents circled the sky above the boat, (we were on the Patuxent in Maryland), chirping their alarm chirps. Though we signed a paper about not holding anyone responsible if we got "hit" by an osprey, I never felt threatened. Though the fellow who led our banding trip, (Melanie, can't think of his name-yikes), said once an osprey flew a little too close to his head:-)

Copyright © 2007 DPOF

Tom Throwe
Last modified: Sat Feb 17, 2007