Welcome to BYC @rita10 !Hi I have some Turkey pelts and had the same happen what I have found that some of them can be slow to eat and drink so what I do is 7 days after I set the eggs I put a few hen eggs in with them so they hatch the same time and they show them how to eat and drink I find that they can be very lazy then they are pushed to the back and starve and or dehydrate. When I have chick's I dip the beaks in water so I know they have had water I think doing this it is worth it.
I also put extra drinker's and feeders in just for a few days.
I look in the pen and see what birds are by the walls they can be the ones that are being pushed out.
A little time spent save a lot of birds.
-Kathy