I removed the queen, 1/3 of the bees and most of the young brood from a hive. 6 hours later introducing 18 grafted queen cups. 4 days later (today) I went in to check the cells and found 7 of 18 had been cared for and capped (not my best percentage but not bad for my 3rd time). Also to my surprise, I found 3 natural queen cups with an egg in each.
I KNOW there isn't a queen in the hive.
There's no other sign of a queen (no other eggs).
Can a worker do this in such a short period of time (4 days) without a queen?