We've been collecting swarms for a few weeks now, mid May. Usually starts in mid April, but it was cold and wet and slowed them down.
Four easy ones this weekend -- my buddy called me and said he had three just above his hives in a tree along a drainage ditch, but he had customers and needed help. Had to reach up and pull the branches over, but they went in nicely. Last one we had to use a bucket on a pole, but I got them all in between garden center saies. He needs to get into them more often, or I need to since he's pretty buried in work this time of year.
Fourth one was at home. After getting all his bees in I walked down to look at mine and there was a swarm hanging off the top cover or one of my hives. Brushed them into a nuc box and they went to town drawing comb. Not the same color as any of my bees I don't think, but who knows.
With Snelgrove splits that makes three new hives, and if my mininucs take (doubtul, didn't have decent looking queen cells) that's five new hives....
Oh, and a split I did at my remove location trying to head off a swarm. Didn't work, they swarmed anyway.