is this something that goes away on it's own? I had a little finch with this same condition show up at my work and i rushed him off to Project Wildlife. They didn't seem shocked by his condition, i was horrified; poor little guy could hardly see :( I will say a pray for this little fellow :)
I'm not aware there is any treatment. Before posting I did some research and what I read was somewhat more encouraging than the info presented in Stan Tekiela's book. Stan says it is always fatal but the article I read said some birds learn to live with the handicap and fewer recover. The reason the disease strikes mainly House Finches is they are not a native species. A few were brought over here for sale in captivity and escaped. Thus, today's large flock is the result of inbreeding which caused this genetic mutation. Actually, the article I read was hopeful as it said the disease is trending downward. Fewer finches are affected today than ten years ago.
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