Re: warre colony recently swarmed
I would feed them them light syrup 1-1, until the new queen situation is settled. The new brood will need pollen and if the forage force is gone, might be safe to add a small pollen patty. Biggest problem with pollen patties is the SHB love em and will ruin it to the point the bees will refuse to eat it so make the serving size small and check to see if the bees are eating it. If they don't want it, toss it. My chickens love it.
Hope this helps
Herbhome Farm USDA zone 7a