question about chicks hatching ?

[jessaw1981]

I hatched chick eggs for the first time about a mo. ago. twhen they zipped out there was a lot of blood. I wound up with 8 out of 15 2 I had to cull. what causes the blood ? do they all do that there was so much that when they pipped and tore the membrane I was sure they were going to drown in it.

 

[mmaddie's mom]

Did they pip & zip by themselves? or did you "help"? I have only had the blood thing when I "helped" and when I saw blood I put the egg down for a while until it stopped bleeding. I don't recommend "helping" unless it is a last resort... sometimes it is a last resort. All 3 I "helped" are now 2 weeks old and doing just fine with momma. I'm curious about this blood membrane thing, too. Anyone?