This year I caught a yellow cast and hived it in a nuc in my mating nuc area - about 150 yards from my drone hives. The cast was absolutely yellow but all my grafts were taken from my blackest hives. When I eventually found laying queens in them the yellow nuc had a black queen and a black nuc had a yellow queen. I'm fairly certain that they swapped homes. I don't think I will put yellow casts there again. Next year I'll find some new mistake to make!
Steve
Bookmarks