Lost 1/2 of operation 3 yrs ago. I dont think its the breed of bee...in my opinion its pesticides in particular neonictinoids. I had not been to Ca at that time, I have gone every yr since then.. Read my post in bee diseases under heading city vs country beekeeping. Interesting that you have five kids..I do too...son 22 step-daughter 20, daughters 15, 12, 2 granddaughter 2. Thinking of home schooling mine next yr, especially since up until now I was in Florida by myself andwe are buying a place and will be there most of winter. Email me when you get a chance about any home schooling info you may be able to share @kentuckyauctioneer@yahoo.com