Re: Too late to add frame of eggs to queenless colony in MD?
Dave, if the hive appears strong, let it ride out. It is way too late to produce a queen and chances are good there is a queen in there that has stopped laying. If your friend does not see some brood by mid Feb., he should plan on adding eggs as soon as he sees capped drone brood in the other hive. Not a guarantee for success, but a better plan than combining IMO. A queenless hive that is strong now should overwinter just fine, but the bees will dwindle rapidly come March if no queen is present.
Thankfully, the bees are smarter than I am. They are doing well, in spite of my efforts to help them.