For the past 18 months, we have been observing sick and dying small
finches around our property, primarily pine siskins, but not limited
thereto. A month ago, we began adding 3 to 4 drops of Povidone-Iodine 10%
(Betadine) to our bird bath every time the water was changed, as the birds
like to drink from it. Reasoning that cholera is frequently a water-borne
disease, addition of a microbicide could help.

Since then, we have not observed a single sickly bird, nor found a dead
one. The birds continue to drink from the bird bath, and do not appear to
object to the taste. Has anyone else had experience such as this?

Bill and Erin Woods Woods Tree Farm Redmond, WA
U.S.A. <wwwbike at halcyon.com>