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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] On Behalf Of Burkhard Plache
Sent: April 5, 2020 12:27 AM
To: 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.
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