What is this?

[jackandkaren]

Found this today on my otherwise healthy chicken. She is active and laying, eating and drinking. It is filled with fluid. Can anyone help?

 

[dawg53]

Here's a link for your to read regarding breast blisters. A skin scraping by a vet may determine if it's MS or staph infection:
https://www.merckvetmanual.com/poul...ditions-of-poultry/breast-blisters-in-poultry