"If you do continue to feed birds:
- Place your feeders in new locations around your yard.
- Vary your feeding locations so that birds do not concentrate in one location.
- Remove feeders that allow contact between fecal material and food (such as platform feeders).
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Clean your feeders with a bleach solution several times a week. Be sure that feeders are dry before filling them with seed."
This sounds extreme. I'm waiting for some company to introduce "Bird Feeder Cleaner! Save your wild birds from dirty feet! Protect them against viruses! Soon to come - self-cleaning hygienic perches with automatic wipers. In product development - little bird masks and diapers to place on infected birds, so they don't spread disease." Humanity has some strange obsessions.