First time chicken person here...
I have a broody serama and broody silky.
The serama has been on 3 serama eggs and 3 silky eggs for 18 days.
The silky has been on a growing number since 7/19. 6 were layed from 7/17-7/20. I found a new egg yesterday and again today.
Can I leave these eggs in the nest?
Also, if the serama doesn't hatch anything.. can I put these new ones under her?
we did, we had one laid in her clutch 2 days after she started sitting the 1st 5 we gave her.
5 hatched together one hatched the next day, ive heard that fresher eggs hatch quicker, which is why when it takes a single chicken at least a week to lay enough eggs to sit on, they still hatch around the same time
the 3 blue eggs our broody sat on would have taken our chicken 3-4 days to lay then we put them under our broody, with 2 other eggs
the next day we had no blue egg and the day after, one was laid in the clutch, so she had been sitting the 1st 3blues and other 2 eggs for 2 days, the oldest egg about 5 days those 3blues and other 2 hatched the same day, the 4th blue only 1 day after, (funny thing, the 1st 3 hatched with multi markings light feet and beak, and the one that hatched the day after ((1 day quicker)) was all black with black beak and slate feet like its mum)
somewhere along the line 2 more eggs got added, into the clutch (we suspect one of the children)
and now 2 days after hatching shes started to lose interest in them, since shes more interested in teaching the chicks to feed,
today she rearranged her nest, she removed all the hay from one side, making a hole and pushed all the hay into the middle, after searching i found one buried in the middle and the other at the bottom of the hole where she was sitting. i reset the nest and she sat in a corner but when i replaced the eggs she pulled them to her, and she sat on them, an hr later i found her sitting at the side again off the eggs so i moved then underneath her there and she settled on them, this is day 4 after the 1st one hatched,
so im guessing as long as your eggs hatch within 3-4 days of each other they should be ok and be looked after. the eggs added 3-4 days after, may be close enough keep her interested in going full term on them. she should sense any movement in the late hatchers
but try to isolate the broodies so no more eggs get added, the last laid eggs will either hatch or not we got the 6 we started with so we not bothered if the late added ones didnt hatch, but i think i will give her a hand sitting them for the next day or so to see if they do hatch before remove them
we will see what tomorrow brings
just reread your post, and checked the dates, i think 10 days is too long, coz they get taught to feed on day 2 and would it be fair to your hen to expect her to be nest bound for a whole month?
ours hasnt been out in 4 days, since they hatched and i think 2 days before that.
UPDATE
8hrs after writing this post one of the mysteriously appeared eggs has a hole in the top, on inspection, there is definite movement and peeping from inside