Sure - the 'fix' is to ensure feed is available upon emergence (of course) - but that doesn't solve the puzzle of why one cage type resulted in survival, whilst the other didn't.
Question for the OP, MSL
MB, Oldtimer, and JW all described Queens needing to feed themselves very soon after emergence.
I am in complete agreement.
Did you put a drop of honey in the cap of the roller cage?
If so it would be accessible to the virgin but protected from the other workers.
If you also feed the virgins in the JZBZ cages where did you put the honey?
The cage design would allow the workers to eat the honey, even if you placed it inside the protected area of the cage, in the warmth of the hive it would run down to where the workers could consume it.
Looks like honey would have to be on the inside vertical surface of the closed top close to the tube or inside the closed plug for it to be left for the virgin.
Or did you not feed either sets?
neither cage type was fed
Thanks, that piece of info eliminates some possibilities at least.
Thankfully, the bees are smarter than I am. They are doing well, in spite of my efforts to help them.
It's certainly a good idea to provide the newly emerged virgin with either RJ, honey or fondant (in order of desirability) - but that's not essential if there are workers able to gain access. Before Chinese 'Nicot' roller-cage clones came onto the market, I made my own cages which didn't have any provision for holding feed - and they worked fine inside a Q-ve starter-finisher.
Likewise, there's a guy in Cambodia (Khmer Beekeeping) who makes his own queen-rearing cages - and as you can see from this screen-grab, there's no provision there for supplying feed. He simply places the q/cell into the cage and then places it on top of the top bars.
It was from watching his queen-rearing videos that I discovered the 'need' to keep q/cells vertical at all times has been one of those myths that appears never to have been questioned. So I placed a few ripe q/cells on top of top-bars, horizontally in my homemade cages, and sure - they emerged just fine.
FWIW - here are two of the above cage designs in use:
Last edited by little_john; 11-23-2019 at 11:54 AM.