"These days I prefer to hunt with a camera. A good photograph demands more
skill from the hunter, better nerves and more patience than the rifle
shot." -- Bror Blixen
On Tue, Jan 12, 2021 at 11:38 AM Brian Patteson <carolinabirds...>
> It’s an interesting situation with Double-crested Cormorants. I think
> those in favor of controlling the population have a warped perspective in
> terms of historical context, as cormorant numbers were greatly diminished
> for many years by the lasting effects of DDT. What we are seeing now, is
> probably more normal in terms of numbers. Interestingly, another species
> which has made a big comeback, albeit many years later is the Bald Eagle.
> The comeback of Bald Eagles has been not been good for Great Cormorants,
> but that species was not nearly as abundant as Double-crested Cormorants.
> There is no doubt that cormorants have a significant affect on fish stocks,
> but so does shrimping, where there is a huge amount of by-catch that is
> beneficial to coastal seabirds that have learned to follow the boats.
> Brian Patteson
> On Jan 12, 2021, at 10:11 AM, <badgerboy...> wrote:
> Thanks Dave for calling attention to this seabird fish consumption study,
> apparently instigated by the fishing industry. Please remember, the net
> effect of any wildlife on the ecosystem is much more than just their
> consumption. This is NOT a dig at the study or those who carried it out.
> Cormorants aint pretty, and they aint terribly popular among birders or
> wildlife management agencies, not to mention with the general public and
> fisheries people.
> However, their role in the recycling of marine nutrients to coastal
> ecosystems is major, they are one of the birds that roost above coastal
> wetlands and return massive amounts of organic material to fishery nursing
> areas, making them a real keystone species for productive coastal
> ecosystems and productive fisheries in the long term. This benefits all our
> birds and other wildlife. Birds such as Gannets and Gulls provide much less
> of this as they tend to roost at sea. In contrast, practically zero of the
> marine nutrients taken by industry trawlers are returned to fish nursery
> Through fish predation, Cormorants' active selection of fitness in fish
> populations off, and near the coast is also a major feedback to ecosystem
> productivity. This is different from people's fishing activity which
> doesn't discriminate what kind of fish get in the net.
> There's a real temptation to scapegoat common birds like cormorants for
> the declining wildlife stocks, which are caused by people and their
> fossil-fueled harvesting, that gives nothing back to the system. I ask
> birders to resist that.
> Guy McGrane, Boone, NC
> On 1/12/2021 7:49 AM, David Gibson (via carolinabirds Mailing List) wrote:
> I thought some of you might be interested in this short Center for
> Conservation Biology piece
> <https://urldefense.com/v3/__https://ccbbirds.org/2021/01/06/seabirds-and-fish-along-the-coast-of-north-carolina/__;!!OToaGQ!7yb4lZP7WmExO6UlQv9zlgvUO3KaNUBH-rtGJwRK6FwaLihywtqfPVfaexvOEBlZaSU$> > about seabirds (cormorants, pelicans, etc.) along the NC coast. The aerial
> photos are fascinating.
> Dave Gibson
> https://urldefense.com/v3/__https://birdpartner.com/__;!!OToaGQ!_QgJIxw7FhB0jOPrhWW7tfmNXToGtgLmOHi0tjBdvHVyIqzjNlJVRupIdNQ3mndIygs$ > <https://urldefense.com/v3/__https://birdpartner.com/__;!!OToaGQ!7yb4lZP7WmExO6UlQv9zlgvUO3KaNUBH-rtGJwRK6FwaLihywtqfPVfaexvOYQXLGEQ$> >