After looking at several of the web-sites, it is obvious that window strikes are clearly a huge problem for bird mortality, as are feral cats. Though the numbers vary on different sites, they are staggering. Anything we can do to decrease the deaths should be done, and the American Bird Conservancy offers many options for homeowners (and busineses) to cut down window strikes. And they have a long-running project to eliminate outdoor cats, another huge problem. Check it out.
Thanks Wendy,
Rick SUssman
Woodbine,MD
-----Original Message-----
From: Wendy O <>
To:
Sent: Sun, Oct 10, 2010 8:49 pm
Subject: Re: [MDOSPREY] Glass collisions- was: Thrush
Rick
A reference link was provided below. The title of the presentation is: AVIAN MORTALITY AT WINDOWS: THE SECOND LARGEST
HUMAN SOURCE OF BIRD MORTALITY ON EARTH. By Dr. Daniel Klem.
Here is the link again for your reference:
http://www.pwrc.usgs.gov/pif/pubs/McAllenProc/articles/PIF09_Anthropogenic%20Impacts/Klem_PIF09.pdf
Here is another link from a David Sibley Blog.
http://www.sibleyguides.com/conservation/causes-of-bird-mortality/
Wendy
----- Original Message ----- From: "Warblerick" <>
To: <>
Sent: Sunday, October 10, 2010 8:24 PM
Subject: Re: [MDOSPREY] Glass collisions- was: Thrush
> collisions with glass is the 2nd biggest killer of birds in the world > after habitat loss
>
> Wendy,
> Could you please provide a source for this fact. I would think cats take > far more birds than window strikes.
>
> Thanks,
> Rick Sussman
> Woodbine,MD
>
>
>
>
>
>
> -----Original Message-----
> From: Wendy O <>
> To:
> Sent: Sun, Oct 10, 2010 6:25 pm
> Subject: Re: [MDOSPREY] Glass collisions- was: Thrush
>
>
> In regards to bird collisions with glass or plexiglass-
>
> If your windows are killing or injuring (many of the ones that fly away > may not really be OK) birds with improperly treated or untreated windows, > see below:
>
> In order for stickers to be effective you must have no more than 2" of > space vertically and 4" horizontally to eliminate bird collisions. One > sticker (or even many on a large window) does not work, as Gail mentioned > below. If you want to treat your windows and want a template that will > help you ensure you follow this pattern, email me offline and I will send > you one with instructions on how to treat the glass. We used this 2" x 4" > technique on our large (6' x 6' approx) picture window and it has > completely eliminated strikes. Putting the stickers up took a while but it > was worth it considering collisions with glass is the 2nd biggest killer > of birds in the world after habitat loss. > http://www.pwrc.usgs.gov/pif/pubs/McAllenProc/articles/PIF09_Anthropogenic%20Impacts/Klem_PIF09.pdf
>
> Here are some other useful products/suggestions/information sources:
> http://www.birdsavers.com/
> http://www.abcbirds.org/abcprograms/policy/collisions/pdf/collisions_flyer.pdf
> https://www.abcbirds.org/birdconservationalliance/campaigns/collisions/Collision_info.pdf
>
> If you are considering new windows or a sunroom, or know anyone who is, > here is some good news:
>
> Bird-friendlier glass is now available in the U.S. - Check the distributor > websites below for more details or to inquire about the product, its > effectiveness, etc. An interesting article on the product here: > http://www.asknature.org/product/077e9d44e8e12f039458729f8de1ada9
>
> Distributors
>
> http://www.roeder-wd.com/ Until June 30, 2011 Roeder Windows & Doors will > offer its products with integrated ORNILUX Bird Protection Glass without > any
> up-charge.
>
> If you're looking for a sunroom or a wall of glass (don't do it unless you > get a pattern on the glass or get treated glass), here is an option:
> http://www.nanawall.com/Learn/BirdProtection.aspx
>
> Another way you can help out is by volunteering with local monitoring > groups that are collecting data on this issue. Volunteers in Baltimore > have found approx 800 birds downtown during monitoring in Spring and Fall > migration. Species we've found include Clapper rail, Sora, Connecticut > warbler, Black-throated green warbler, Virginia rail, Yellow-bellied > flycatcher, Lincoln's sparrow, Ruby-throated hummingbird, just to name a > few. If anyone wants info on volunteering for either DC or Baltimore, > email me offline and I can put you in touch with the appropriate folks.
>
> Wendy
> Baltimore, MD
>
> ----- Original Message ----- From: "Gail Mackiernan" > <>
> To: <>
> Sent: Sunday, October 10, 2010 6:28 AM
> Subject: [MDOSPREY] Glass collisions- was: Thrush
>
>> Unfortunately hawk silhouettes and other rather widely-spaced items >> placed
>> on glass windows have been found only marginally effective in preventing
>> bird strikes, although they probably help. I recently purchased some
>> ultraviolet sticky patches which birds can see (but I can't) -- however > >> they
>> have the same down-side in that they are widely spaced. I keep the blinds >> > on
>> our sun porch drawn (but with slats open) and this also helps but >> wondered
>> if anyone had any other suggestions.
>>
>> I know that some have suggested drawing closely-spaced vertical lines on >> > the
>> glass with a yellow highlighter (which again, birds see in the UV but are
>> almost invisible to us). Has anyone tried this?
>>
>> Other thoughts?
>>
>> Gail Mackiernan
>> Colesville, MD
>>
>> on 10/09/2010 9:37 PM, sharon schwemmer at wrote:
>>
>>> Alas,
>>>
>>> My son came home around 5PM today to find a GREY-CHEEKED THRUSH dead on >>> >> the
>>> deck with pokeberry juice dripping from its beak. It had an unfortunate >>> >> run
>>> in with the sliding door, which I might add, has several hawk >>> silhouettes
>>> all over it. :(
>>>
>>>
>>>
>>> Sharon Schwemmer
>>> Hampstead, MD
>>> swschwemmer at verizon dot net
>
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