Date: 9/24/19 5:37 am
From: Laura Ratchford (via carolinabirds Mailing List) <carolinabirds...>
Subject: Re: 3 Billion birds gone
From "Direct Mortality of Birds from Anthropogenic Sources"--published in
the Annual Review of Ecology,Evolution, and Systematics (2015)

Collisions with Buildings

Klem (1990)
< >
attention to the issue of bird collisions with buildings and with windows
in particular. However, relatively few peer-reviewed studies of this topic
have been conducted. Three recent quantitative reviews have generated
national estimates of bird-building collision mortality and/or species
vulnerability. Arnold & Zink (2011)
< >
bird mortality data from three cities in eastern North America to identify
supercolliders (i.e., species found dead disproportionate to their
abundance). They found that most supercolliders are migratory species and
that most urban-adapted species are not vulnerable to collisions. For
Canada, Machtans et al. (2013)
< >
that between 16 and 42 million birds are killed annually by building
collisions. Based on 10 different data sources, they demonstrate that
skyscrapers and other large buildings kill the most birds on a per building
basis, but individual residences cumulatively kill the most birds. The most
extensive review to date—based on 26 studies, including citizen science
programs in 13 cities and more than 90,000 fatality records—estimates US
building collision mortality at between 365 and 988 million birds (Loss et
al. 2014a
< >
On Tue, Sep 24, 2019 at 7:58 AM Laura Ratchford <lratch...> wrote:

> Thanks, Parker--you make a great point. I need to examine my cynicism
> about government and politics. I also wonder if there is a way to bring
> attention to the terrible problem of bird strikes to the corporate sector.
> LEEDS sustainability standards have been embraced by commercial
> developers--perhaps raising awareness among building owners about the
> terrible problem of bird deaths by window strikes--and the fixes
> available--could also bring real changes.
> On Tue, Sep 24, 2019 at 7:49 AM Parkin Hunter <tparkinhunter...>
> wrote:
>> I agree we all should do stuff on what is really a micro level. However,
>> think about this as reported by Ballotpedia:
>> . The *federal*government owns 4.64 percent of *South Carolina's* total
>> *land*, 898,637 acres out of 19,374,080 total acres. *South Carolina* ranked
>> 30th in the nation in *federal land* ownership.
>> Ballotpedia › Federal_land_policy_i...
>> The direction government is taking on conservation is appalling. However,
>> to have any real inpact, government has to
>> change. People have to vote, maybe against their own perceived self
>> interest in some areas, to get better conservation laws or even get current
>> ones such as the MBTA and ESA enforced.. With the current gutting of the
>> Clean Water Act, watch how fast small wetlands are going to disappear. If
>> you vote only to reduce taxes and shrink goverment, my hypothesis is that
>> birds and everything are in big trouble. As I understand it, proposals are
>> out there to open Chaco Canyon to uranium mining as well as to expand
>> logging and mineral development in the Tongass National Forest.
>> Apologies for saying too much. If I offended anyone, I apologize for
>> that also. I feed birds and I think do a lot of conservation but am under
>> no delusion- illusion that this will have any noticeable or measureable
>> impact.
>> Parkin Hunter
>> Columbia, Ridgeway, Garden City Beach sc
>> Sent from my iPhone
>> On Sep 24, 2019, at 7:23 AM, Laura Ratchford <lratch...> wrote:
>> Agree (sadly) about Congress. But there a few things that I know I can
>> do: leave snags on my property when trees die--just have them topped; cover
>> all windows in my house with the same film that the Toronto Zoo used with
>> their glass entry caused a massive number of window strikes; plant native
>> plants. I'd love to hear other suggestions!!! Thanks to all of you, Laura
>> On Tue, Sep 24, 2019 at 4:11 AM "J. Merrill Lynch" <
>> <carolinabirds...> wrote:
>>> To all of you who advocate trying to solve this problem through the
>>> political system I ask this question. Do you think the representatives in
>>> Congress represent you and your interests? If so you are comfortably
>>> delusional.
>>> Merrill Lynch
>>> Echo Valley Farm
>>> Watauga County, NC
>>> Sent from my iPhone
>>> On Sep 23, 2019, at 5:41 PM, Simon Thompson (via carolinabirds Mailing
>>> List) <carolinabirds...> wrote:
>>> Thanks Parkin
>>> This is not a dead horse at all- we ALL need to be talking about it,
>>> writing to our representatives and getting the word out that we don't like
>>> what this administration is doing at all.
>>> Keep up the good work
>>> Simon
>>> Simon RB Thompson
>>> Ventures Birding Tours
>>> <>
>>> Please use the Ventures e-mail (<Venturesbirding...>) to contact
>>> the Ventures office - thanks!
>>> On Mon, Sep 23, 2019 at 5:12 PM Parkin Hunter <carolinabirds...>
>>> wrote:
>>>> I don’t think it is beating a dead horse. Look at this admitted
>>>> anticipated damage to bird life in coastal Alaska. If our government does
>>>> not change, I do not think there is really any hope.
>>>> <>
>>>> Parkin Hunter
>>>> Columbia, SC
>>>> Sent from my iPhone
>>>> On Sep 23, 2019, at 2:53 PM, <badgerboy...> wrote:
>>>> Not to beat a dead horse, but pursuant to the news about bird declines
>>>> to the tune of 3 billion birds over 50 years in our continent, if you'd
>>>> like to see first-hand just how this is happening, then go out to Phillips
>>>> Gap (Milepost 266 or so in Ashe Co. on the Blue Ridge Parkway) right now
>>>> and see what happens when fossil fuels, earth-moving equipment, and people
>>>> all get together.
>>>> What was formerly an incredibly productive wetland and small pond with
>>>> lots of turtles, frogs, birds, (and I even saw an otter in there once) and
>>>> a densely vegetated shallow and border area, is now a smoking wreck. The
>>>> entire area has been bulldozed in what appears to be motivated by the need
>>>> to water young christmas trees from the pond's supply. There's a dead
>>>> snapping turtle right on the upper side of the pond. An incredibly sad, but
>>>> all too common sight these days as our last remaining productive ecosystems
>>>> are stripped away for profit. And all this in plain view from the Blue
>>>> Ridge Parkway.
>>>> The irony here is that the only thing being produced by this calamity
>>>> is the deluded dream of simpler times invoked by having a tree in one's
>>>> house during the holidays. If you care about NC appalachian mountain
>>>> ecosystems and all the birds they support, you might think about not buying
>>>> a live christmas tree this year, and in the foreseeable future. The
>>>> environmental destruction could be a very high price to pay for this
>>>> comfortable delusion.
>>>> In birding news I found not one but 2! Philadelphia Vireos today on the
>>>> Mountains to Sea Trail by US421, along with 12 species of warblers. Its
>>>> shaping up to be a very birdy fall migration season this year in NW NC.
>>>> Guy McGrane, Deep Gap, NC

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