This is the result of conjunctivitis which generally starts with House Finches.
I would recommend you throw out all of the seed you currently have out and wash
your feeder thoroughly before reseeding it. Also, if you can get that bird to a
wildlife rehabilitation facility, that would be preferable too. You can google
those keywords to find the nearest location.
Johnson City, TN / Brownsville, TX
Get Outlook for iOS<https://aka.ms/o0ukef>
From: tn-bird-bounce@xxxxxxxxxxxxx on behalf of Scott Heppel
Sent: Friday, April 5, 2019 4:10 PM
Subject: [TN-Bird] American Goldfinch, male, blind in one eye.
This partially blind American Goldfinch was just photographed with my iPhone in
East Memphis. I was able to get within inches of the bird without frightening
him. He appears to be blind in his left eye, but sighted in the right eye. He
has been on the same perch of the feeder for at least 20 minutes, alternately
feeding and resting. The orange object attached to his abdomen was a leaf that
we extracted without disturbing him.
Sent from my iPhone