I make most things in my bee yard, enjoy thinking up projects so here it is for moving bees. I take piece of 1/2 X 1 1/2, wood or plywood, cut same as length of entrance, hole saw 3 1" holes spaced out from ends , staple screen to back, drill 2 holes near top .
place over entrance and run 2 sheet rock screws to hold closed. even moving around yard works every time and loose no bees. Also use ratchet straps to hold together. Prepare for next time..