I am doing crush & strain so the foundationless is for me. I noticed last year that they had their brood nest area, then during the blackberry flow & later in the season they made bigger cells to put the honey in, some bigger than drone! I'm "goin in" today to see just whats what from winter as it's supposed to be in the low 50's, may be the only chance I get for the next 3 months, our weather is so variable. J
There are essentially 3 standard comb sizes within a bee hive. Brood comb, Drone comb, and Storage comb. Burr comb will have varied sizes of cells including some smaller than brood cells.