HELP! 3 Chicks Have Weird Bubble On Neck!

[EricaCAL]

Hello all! I am desperate for help tonight! I was just holding my chicks (all are 2 weeks old) and I noticed that 3 of 6 have a fluid or air bubble on their necks, right side near top of their wing. I rubbed it and it did not seem to hurt them. Does anyone know what this is?? They are all eating, pooping, preening, etc and do not seem sick at all. I am attaching pics but its very hard to see. It looks like a blister to me but its not just isolated to one chick so I am freaking out!!!!! Thank you in advance for any help!!!! I love my chicks and will do anything to make it better (these are NOT meat birds so please no comments about butchering/killing them) THANK YOU!!!!!

 

[Granny Hatchet]

Help me, wierd air bubble on my chick??? | BackYard Chickens
https://www.backyardchickens.com › ... › Emergencies / Diseases / Injuries and Cures

 

[ChickNanny13]

Can't make it out from the pictures but check out the link granny hatchet posted, it's more than likely a full crop