I have eight chickens (I call them my girls). About a week ago, I noticed that one of my girls had large blister like puffiness between her toes on the top side. The bottom looks normal to me. The puffiness looks like fluid filled blisters and when I touched them the girl pecked me like it hurt. I just need help in determining what this is and how I need to treat it. One of my other girls has started this on one of her feet. I couldn't get my pictures to load. You can see them in my profile page. Thank you!