Chicks dying don't know why could it be bad batch or the roosters

[geese11]

With in the same day of the chickens hatching some are dying the white ones are good but it is just the black chicks we are having a problem with. The last one had a large lump on it's belly and could not walk it's feet were curled in. Another just died it seemed ok. One that has just hatched seems very week only moving a little bit but no churping. 2 others have hatched and they are fine and very noisy.

What could it be have we done something wrong we did't have this with the first batch.

 

[chickensinwasillaAK]

since it was all failures of one breed, you may just have gotten weak eggs. It doesn't sound like you've done anything wrong when your whites are hatching fine. Just consider it nature taking it's course.

 

[geese11]

Thanks I hope tht is the case we just lost another black one

and another black one that hatched yesterday is not looking to good

 

[geese11]

the little black one died this is really a bad batch.
Could it be if anither rooster got with the hen as we have a couple of roosters so could it be the other one has been getting to them. The roosters are Australorps and the hens are white leg horns.