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)
See what birds occur the most by region
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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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Heather Diamond
Gresham, OR, USA
I have a wonderful “Finch Family” I feed. Including House Finches, Goldfinches and Purple Finches. On 7/26/24 I noticed a large eye growth on a House Finch it was from a far and so strange looking I thought I was seeing things. So I emptied and bleached my feeder before filling it up with new seed. Today it came back and I got a good look and lots of pictures. I have taken the feeder down and cleaned the area around the feeder. Should I do anything else?
Growths
Species: House Finch
Left eye growth
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