I have had a nuc in the yard with four other established hives without any problems, until..
I am raising a new queen in the nuc and it is time to start feeding the nuc to enhance comb development.
When I placed a top feeder on the nuc the other hives immediately started to rob the nuc. I reduced the entrance down to pencil size.
And the attack continued for hours. I then put on a robbing screen. Now they are still trying to get into the nuc by the hundreds!
Besides moving the nuc to another location, is there any other way to stop this cycle??