Find out what Project FeederWatch is, its history, and more
Find out how you FeederWatch, when you can FeederWatch, and what you'll need to do to get started
Review these instructions carefully before you count and enter data
Find out about types of feeders and types of foods, and where to place your feeder
Feeding Birds FAQs
Explore the winter distribution, food, and feeder preferences of common feeder birds.
Find out about color and plumage variations, bald heads, and deformed bills
Unusual Birds Gallery
Find out about bird disease and identifying the signs of bird disease
Sick Birds Gallery
Find out how to identify birds and download identification tools
Learn how to help birds as they seek out food sources, nesting habitat, protection, and more
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Find an article archive packed with lots of great bird study information
Learn about house finch eye disease
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Cornell Lab of Ornithology feeders
Ontario (winter only)
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See where FeederWatchers are
Graphs of regional population trends and distributions
Explore papers that have used FeederWatch data
Lab scientists analyze the data submitted by FeederWatch participants.
See birds well outside their winter range submitted to Project FeederWatch.
Start here for data entry and personal data review and exploration
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Woodland, CA, United States
I saw these two house finches in my backyard this morning 2/14/16. Both appear to have eye disease. I clean my feeders and bird bath regularly, but still see birds with eye disease almost every day. I usually see about 15 – 20 house finches at a time in my yard, with 1 – 5 of them with eye disease. After I clean my feeders, I keep them down a few days before refilling them. But as soon as I put them back up, I see finches with eye disease again. I started looking for eye disease in the Fall and I didn’t see any at first. Then I would just see one occasionally. Now it’s more frequent.
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