[NatureNS] bird notes, March 22 to 31, 2020 -- eagle nests etc.

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From: Donna Crossland <dcrossland@eastlink.ca>
Date: Sun, 5 Apr 2020 16:36:20 -0300
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Interesting approach!  Just who would be shamed?

Donna

On 2020-04-05 2:02 p.m., Howard Pew wrote:
>
> About 15 years ago, I put up an osprey platform on a tall pine tree on 
> my property in Chester.  It was quickly successful and chicks were 
> raised over the next few years.  Then came the eagles.  One chick was 
> seen to be taken one year and then one of the two babies was grabbed 
> the next year.  Harassment was routine.  The nest has now been 
> abandoned for several years.
>
> Likewise I only know of three nests last year on islands in the nearby 
> waters.  Years ago, it seemed that every island had an osprey nest and 
> it was easy to find 20 nesting families..
>
> Perhaps “naming and shaming” the eagles would be effective.  This 
> would mean cameras and video feeds on some Nova Scotia eagle nests.  A 
> lot of people would be watching the babies hatching and being fed.  
> And then there would be many eyes seeing exactly what is being brought 
> back to the nest, including osprey chicks, loon chicks, and GBH young…
>
> HP
>
> *From:*naturens-owner@chebucto.ns.ca <naturens-owner@chebucto.ns.ca> 
> *On Behalf Of *Ronald Arsenault
> *Sent:* Sunday, April 05, 2020 11:59 AM
> *To:* naturens@chebucto.ns.ca
> *Subject:* Re: [NatureNS] bird notes, March 22 to 31, 2020 -- eagle 
> nests etc.
>
> Hi John and all,
>
> On a number of occasions I have witnessed Bald Eagles harassing 
> Ospreys after the latter had captured a fish. The eagle, flying high 
> above the osprey, would dive bomb the osprey causing the bird to drop 
> the fish.  The dive was "J" shaped, with the eagle turning up just 
> before contact with the osprey would have occurred. It would then have 
> to turn and head down and go after the fish. In a spectacular display 
> of speed and maneuverability, I have seen the eagle catch the fish in 
> its talon before the fish hit the water! In fairness, though, I have 
> also seen them miss.
>
> While the Bald Eagle understandably has the reputation of being a 
> lumbering flyer who prefers feeding of carrion, they are very capable 
> predators with impressive flying abilities, in both speed and 
> maneuverability.
>
> Growing up on PEI  in the 60's and early 70's, I never saw a Bald 
> Eagle. Not a single one! This is quite a contrast with the situation 
> today where I see eagles on a regular basis when visiting PEI.
>
> As for their impact on other species, I started visiting parts of 
> Antigonish and Guysborough counties in the late 70's. In the early 
> years, I saw many ospreys, while eagles were few and far between. 
> These days, I go to that area of the province much more infrequently, 
> however the relative abundance of these species appears to have 
> reversed. I frequently see Bald Eagles, while I rarely see ospreys. 
> Obviously this is anecdotal only, but I would love to see actual figures.
>
> I also remember reading that the increase in eagle numbers had a 
> negative impact on the seabird colonies on the Bird Islands off Cape 
> Breton. I am hoping someone can add details to this.
>
> Stay safe
>
> Ron
>
> On Sun, Apr 5, 2020 at 6:24 AM John and Nhung <nhungjohn@eastlink.ca 
> <mailto:nhungjohn@eastlink.ca>> wrote:
>
>     Hmm ... some of us have seen eagles attacking gulls.
>
>     Wonder if that might have some effect on terns, which are not
>     nearly as common as a generation or two ago.
>
>     Has anyone seen eagle-osprey interactions?  I've heard of
>     predation on osprey nests, but am not sure how common that is.
>
>     -----Original Message-----
>     From: naturens-owner@chebucto.ns.ca
>     <mailto:naturens-owner@chebucto.ns.ca>
>     [mailto:naturens-owner@chebucto.ns.ca
>     <mailto:naturens-owner@chebucto.ns.ca>] On Behalf Of Burkhard Plache
>     Sent: April 5, 2020 12:27 AM
>     To: naturens@chebucto.ns.ca <mailto:naturens@chebucto.ns.ca>
>     Subject: Re: [NatureNS] bird notes, March 22 to 31, 2020 -- eagle
>     nests etc.
>
>     To your claim that gulls increased in numbers:
>     My understanding is that they took advantage of open landfills
>     and also discard of fishing fleets.  At least that is the common
>     understanding of the situation in Europe.
>     With the closure of open landfills, gull numbers declined.
>
>     My remark should not distract from the fact that human
>     interventions (intentional or unintentional) tend to have
>     unexpected and/or unintended consequences.
>
>     Burkhard
>
>     --------------
>     Re: David Webster
>
>     [...] This reminds my of the Sea Gull cycle.
>
>         The common Gull became threatened in the early 1900's due to
>     harvesting of eggs for food so egg gathering was forbidden. They
>     responded gradually and eventually became so abundant that they were
>     threatening Terns.
>
>         A sensible solution would have been to allow Sea Gull egg
>     harvesting but instead people were hired (or rounded up) to make
>     distracting noises whenever a male gull was about to get lucky in
>     areas where Terns also nested.
>
>         So one by one, and I would not care to predict what will take the
>     hit, but logically waterfowl which frequent fresh water/coastal water
>     will be vulnerable. Perhaps even Sea gulls or Terns.
>
>
> -- 
>
> Ronald G. Arsenault
> Halifax, Nova Scotia
>


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    <p>Interesting approach!  Just who would be shamed?</p>
    <p>Donna<br>
    </p>
    <div class="moz-cite-prefix">On 2020-04-05 2:02 p.m., Howard Pew
      wrote:<br>
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