Here's a link to a story from last year about a similar project for
PVC-pipe mining claim markers:
http://www.seattletimes.com/business/blm-capping-open-pipes-mining-claim-markers-deadly-to-birds/

Rick

On Mon, May 8, 2017 at 3:47 PM, Diane Weinstein <Diane_Weinstein at msn.com>
wrote:

> There is a project taking off in Washington and across the country to help
> birds and other wildlife. Like the Fishing Line Recovery and Recycling
> Program, it is a simple and inexpensive way to make a difference
> for wildlife. Some of the local Audubon Societies as well as Audubon
> Washington are getting involved in the program.
>
>
> The Teton Raptor Center is sponsoring a project to prevent birds and small
> mammals from entering vault toilet ventilation pipes. Each year thousands
> of birds get stuck, suffer and die in open vertical pipes. The Raptor
> Center has partnered with 32 states and has made available a simple fix
> that includes an inexpensive screening device. Please see their web site
> at www.tetonraptorcenter.org/our-work/poo-poo-project for more
> information.
>
>
> As you walk the trails enjoying the birds and other wildlife, please be
> observant of vault toilets with open vents. If you see one, contact the
> proper authority and request that it be screened. Also, if you have open
> pipes on your property, such as sign posts, fences, building plumbing
> vents, survey markers and irrigation systems, please cap or screen them.
> There are several commercial products available. For additional
> information, please contact the Kittitas Audubon Society.
>
>
> Diane Weinstein
>
> Issaquah
>
>
> _______________________________________________
> Tweeters mailing list
> Tweeters at u.washington.edu
> http://mailman1.u.washington.edu/mailman/listinfo/tweeters
>
>


--
Rick Tyler
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman1.u.washington.edu/pipermail/tweeters/attachments/20170508/1d2c8b6e/attachment.htm