The USDA APHIS | Animal Health avian flu page now lists three more outbreaks confirmed on May 20. All are in Sioux County, Iowa. One involves a flock of 240,000 chickens; the sizes of the other two (one a backyard flock of mixed poultry, the other a commercial chicken operation) are still uncertain. So the number of birds killed or culled by H5N2 or H5N8 is now something more than 39,186,573.
Meanwhile, I've heard from a high-school friend who now lives in Iowa. She emailed me today and said:
The avian flu is a big deal for poultry farmers in Iowa, with folks canceling the poultry exhibits at county fairs, and supermarkets going out of stock on chicken parts. One person called me up all distressed because her neighbor is sneaking into her yard and night and dumping out her birdbath. Seems he thinks he’s in danger of getting bird flu from the birds she’s attracting.