wild birds

[tropical]

someone told me, if i put a copper coin in the bird bath, it would stop the water getting dirty. Will this harm the birds?

[buildersmate]

No it won't work.
No it won't harm the birds.

[insurance]

we put a small piece of pure copper in our bird bath and it does keep the water clear and not go green.copper coins are not pure copper thats why they do not work..