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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