See  https://www.youtube.com/watch?v=YPW1tmBjoQ0

On 24 December 2017 at 09:44, Mike S <
[log in to unmask]> wrote:

> Think I read somewhere that someone experimented with blocking the flight
> of desired drones and virgin queens until sometime after 4:00 in the
> afternoon and used that as a method of trying to obtain the desired mating
> crosses.  Has anyone heard of that or has tried that?
>
> Mike in LA
>
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