Much like the little book lending libraries, at “flybraries” people can leave a fly to share, or take one if they need one. And they are encouraged to create their own flybrary which they can then add to the project’s growing registry.
From the backside of signs at boat ramps in South Florida to river-side signs in Alaska, The Flybrary Project connects fly fishers across the world with one another—educating visitors of the fisheries and promoting comradery amongst strangers who share the same passion.
LINK (via: Boing Boing)
Birds, especially crows and ravens will pick those up. Sounds like a bad idea. Who knows what will grab them.