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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
Find out how to identify birds and download identification tools
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Learn about house finch eye disease
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Cornell Lab of Ornithology feeders
Ontario (winter only)
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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.
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Yorba Linda, CA, United States
I first observed a bird in this condition in August and took my feeders down thinking they might be spreading the disease though I cleaned them quite regularily. I still see lesser goldfinches with this with this condition. Needless to say it kills them. I’d very much like to know what is wrong with them and whether or not I should leave their feeders down or can replace them.
In case it’s not evident, the growth starts at the beak.
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