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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.
=20
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..
=20
Perhaps =E2=80=9Cnaming and shaming=E2=80=9D 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=E2=80=A6
HP
=20
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.
=20
Hi John and all,
=20
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.
=20
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.=20
=20
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.
=20
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.
=20
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.
=20
Stay safe
=20
Ron
=20
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. =20
Wonder if that might have some effect on terns, which are not nearly as =
common as a generation or two ago.=20
Has anyone seen eagle-osprey interactions? I've heard of predation on =
osprey nests, but am not sure how common that is.=20
-----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>=20
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.
=20
--=20
Ronald G. Arsenault
Halifax, Nova Scotia
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