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View Diary: The Daily Bucket - Backyard Science 2nd Christmas edition (36 comments)

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  •  Welcome - (4+ / 0-)
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    Polly Syllabic, PHScott, salmo, burnt out

    Hope you'll keep us updated.

    What's the usual period for eagles up there?

    I came for the politics and stayed for the science.

    by bwren on Wed Dec 26, 2012 at 09:04:29 AM PST

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    •  Eagles arrive at or shortly after ice out (3+ / 0-)
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      Polly Syllabic, burnt out, bwren

      Adult pairs are usually along the river at or very shortly after ice out (late March/early April in most years these days).  They reuse the same nest for years, and of course, there are no leaves then, so they're relatively obvious.  I was surprised to see the one I saw recently.

      I was even a little surprised to see a pair while paddling around a feeder stream and smallish pond a month ago.  They were a mature adult and an immature companion/chick(?) on their customary perch near the head of that stream (on the roots of a big drift log).  The juvenile bird was disturbed as I paddled into the pond, but the adult had seen many people doing what I was doing and found nothing in my presence to warrant the effort of flying off.  It did watch me, though.  That was late for a departure.  By the time the frost is in the ground, the fish they mostly feed on are deep, and operating on a reduced metabolism that slows things down enough to make them an unreliable food source.  

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