PLEASE HELP!

[chick magnet2]

i just got 4 day old chicks. when we got them 1 of em had... well on 1 side of it was normal and on the other side it was like a balloon. when i hold the other chicks the r normal and then when u pick this one up the balloon side feels like a water balloon.
now three weaks later it still seems helthy ad is the 1st to fly. but a second chick is becomeing like this except when we take them out to the grass it lays over. the first 1 didnt do this are the problems related??? i dont know what to do i cant find any thing on the and enternet if it has to do with the breed the breed is susex. if u know what the problem is will they live? should i bring them to the vet? PLEASE HELP!

 

[chick magnet2]

heres a picture.its under the left win.

 

[sunshine ducky]

this is really strange people have the same problaum well I think it wasnt cared properly or didnt hatch safley

 

[TeamChaos]

I am missing the "balloon" in the picture. Is it actually the chick's side- like under the wing- that is inflated or is it around front on the chest? Are you familiar with the chicken's crop and what it feels like?

 

[sunshine ducky]

I agree I only see the top of the chick only