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.
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Unusual Birds Gallery
Find out about bird disease and identifying the signs of bird disease
Sick Birds Gallery
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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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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
Keep live track of your counts using the FeederWatch mobile app
M D Mercurio
Phoenixville, PA, USA
Male and female house finches with apparent eye disease. Male finch had crustiness on right eye as well.
Eye problems
Category: Eye problems
House Finches with eye disease
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