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That scenario, one of eagles swooping repeatedly after its prey until the diving bird becomes so exhausted that it is captured, is the described fate of some loon chicks on our inland lakes these days. The juveniles can't dive for as long as the adults. Once a resident eagle has zeroed in on the young loon, it's a perilous fate indeed. According to the vet, generally a sharp puncture wound to the skull.
Donna
-----Original Message-----
From: naturens-owner@chebucto.ns.ca [mailto:naturens-owner@chebucto.ns.ca] On Behalf Of Fred Schueler
Sent: February-21-17 9:17 AM
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] Bald Eagle 1, Cormorant 0
On 2/20/2017 9:33 PM, bdigout wrote:
> This might be more common than we think. A couple of years ago in
> Samsonville, Rich. Co. several of us watched an eagle hover over the
> water and repeatedly swoop down, chasing a cormorant. Each time the
> cormorant surfaced the eagle would swoop. When the cormorant was
> finally exhausted, the eagle grabbed it and, like Eric said, swam it to shore.
* I've never seen this carried through to the end, but I've always understood it to be a standard hunting technique of Bald Eagles.
fred.
==================================================
> On 19 Feb 2017 20:20, Eric Mills wrote:
>
>> Early this afternoon I was scanning the shoreline at Eagle Head Beach
>> in Queen's County. From beside me an adult Bald Eagle chased a large
>> dark bird out onto the water, forcing it down behind a rocky islet.
>> For two or three minutes nothing happened, then the eagle emerged,
>> dragging a still struggling cormorant - but swimming, not flying,
>> with such a big bird. It was about 150m to shore, and the eagle
>> flapped on through the water for several minutes, using the avian
>> equivalent of the breast-stroke, until it was able to emerge on a
>> rock with the now very dead cormorant, and begin to tear it apart.
>>
>>
>>
>> I concluded that this was one very hungry eagle - all that effort,
>> swimming no less - for a meal as appetizing as a cormorant.
>>
>>
>>
>> Eric L. Mills
>>
>> Lower Rose Bay
>>
>> Lunenburg Co., NS
>>
>
>
>
--
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Frederick W. Schueler & Aleta Karstad
Fragile Inheritance Natural History
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