Watch along wind breaks, tree rows, especially in elevated areas such as
hilltops.
But, as many have said, unless you are near a really big breeding yard -
such as some that I've seen in CA with thousands of nucs, with a few hives,
you're probably not going to see/hear a drone aggregation area.
I mentioned radar, because it is usually not easy to find the drones. Nor
is it necessary. Best to be sure you've sufficient drones - most breeders
have a group of hives in the yard, each containing lots of drones. Don't
rely on recruiting drones from feral colonies or other beekeepers - supply
you own. The drones and queens know where to go.
Jerry
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