Lost 24 of 24 :shock: Needless to say I'll be setting up plenty of swarm traps in the next week or two. What I think happened... Nearly all colonies did late supercedures last fall and didn't build up like they should have. When I looked in on them in Feb, the ones that had already perished were very small clusters. The ones that made it through until last week were also small clusters, then a nearby commercial beek got 2 truckloads of bees back from the almonds. Two days of 65F+ temps, me off at work, nothing blooming yet, and my weak colonies less than 1/4 mile from a lot full of hives busting at the seams and my colonies were quickly finished off.