>When I first started noticing it, >it appeared to suddenly become common. But in the past few years, I've >seen less--perhaps do to better mite management on my part. Same here. When started my project 2001, lots of bald headed brood. Lately very few. My guess was (and is) that bees showing bald headed brood know something is wrong, but they react too late. Varroa resistant bees remove infected larvae in an earlier stage. Juhani Lundén www.buckfast.fi no tretments since 2008 *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html