Thanks for the quick reply! No, unfortunately she is not an experienced mother. This will be her first brood. I fully expected my Cuckoo Marans to go broody (AGAIN) but they haven't yet this spring. They have been excellent mothers in the past, handling large broods. She is very attentive of the eggs so far, and drew blood on me when I disturbed her to candle..LOL! Bite and twist! Ouch!Is she an experienced momma? If not, then I always error on the side of fewer. (and I generally try not to use a first time momma with purchased eggs).
28 is a lot even for an experienced momma, but full size hens with plenty of fluff have hatched and brooded that many...but it is honestly really pushing the upper bounds.
Normally, with a larger hen, 20 is the upper limit.
If you've purchased eggs, I always put my focus on those and give them the best chance of success. You don't want to risk purchased chicks for barnyard ones, if that makes a difference to you.
Wait and see what hatches, but I'd leave momma with the ones she's hatched and simply brood the ones in the incubator artificially....if those purchased chicks are a special deal.
Unless the purchased chicks are a really big deal. Then I'd take those and put them in artificial brooding and let momma have all of the barnyard ones....unless you've got an experienced momma and a good grow out set up that prevents stupid chick loss and/or loss from predators and/or loss from foot traffic from the flock or squirmishes therein.
LofMc
EDITED TO ADD: incubator chicks don't always graft easily with momma and the hatched chicks, which is another thing to keep in mind. Being underneath a hen, while hatching, with mum clucking encouragement, begins the bonding between chick and momma. The incubator chicks can be seen as an invader if the hen is not the tolerant type. And/or the incubator chicks often don't see the big dark scary hen as warmth and comfort. So grafting fosters can be a bit tricky depending upon chicks and hen.
She has 4 of the purchased special eggs. I have 7 in the incubator.
I was just hoping she would do most of the work! Ugh. I can brood them If I have to. Maybe I'll just try to slip her a few more. I have plenty of room and sectioned off yard within my main yard for hens with chicks. They're safe and enclosed, but within confines of the main flock for gradual familiarity. It has worked awesome in the past.
The barnyard mix eggs are to be my replacement higher production eggers. Red Sex Link hens X Spitzhauben rooster (Molly) & Red Sex Link hens X Easter Egger/Spitzhauben (Wiley) rooster. I have been very pleased with the crosses from Molly the Spitzhauben rooster so far.