Up on old man TJ’s roof where he keeps three hives in Albuquerque, I began my education.
Drone brood pops up out the comb to accommodate the larger size of drone larvae. Later this week, I’ll post an annotated photo of worker brood so that you can see the difference.
Drone brood is fine. You want some drone brood in your hive, but too much and you won’t have enough workers to gather honey and maintain the hive. Too much drone brood might also be a sign that your queen is failing.