Is this normal?

[kbbcass]

So far 2 of my 30 eggs have hatched. The second one that hatched looks like it has some sort of red bulgy area near its butt. Is this normal? What is it? This is my first batch of eggs and I am new to incubating. Any info would be greatly appreciated!

 

[lazy gardener]

Picture?

 

[kbbcass]