Bad news, folks. Do you remember Mystique, the gorgeous partridge NN, large good body, some Fm-ish traits? Was certain I would breed her. And Trinity, the other bigger NN girl, all black, NN phenotype? Her too. The two I was certain to want to breed.
Well, as I was trying to nail down the egg eater earlier (problem fixed now), I noted that SOMEONE is laying a lot of these (below), and I'm afraid it's got to be either Mystique or Trinity (I think it's Mystique). Not good for breeding plans...
Anyone ever try that food coloring on the vent thing to tell who's laying what? I need to know for sure, and it's rare that I can just hang out and watch all 7 girls go in and out of the nest boxes during the day (even on a weekend).
- Ant Farm
Do you track egg weights? I've found this VERY helpful, especially when they first start laying. Not only has it helped me determine when the eggs are sizable enough to ensure a good hatch rate, but noticing a sudden increase in egg weight, not just size, has helped clue me in to the probability of a double-yolker so I don't need to candle every single egg. @hellbender hit the nail on the head with this one....DYs are not uncommon in pullets that have just started laying. Most of my DY girls have leveled out after about 2-3 months of consistent laying. Now their jumbo eggs typically have one massive silver dollar sized yolk instead.