I think I've had 2 Buff Orpingtons (I can't tell them apart either) tag teaming a nest of 2 eggs. Was 4 but 1 cracked when I tried to move the 1st broody hen. When we candled at 10 days 1 wasn't progressing. Yesterday both were in the chicken yard. It's only the 2nd time I've seen that. I noticed 1 was off by herself puffed out & limping. Then I noticed the others attacking her! I fought my rooster & brought her in. Checked her all over for parasites, & checked if she was egg bound. Found no evidence of either. I bathed her in epsom salts, dried her, put her in a nest box in a large dog crate in the basement. I've given her vitamins in her water & scrambled eggs w oregano. Let her set overnight. Today I got her out. She didn't walk much but I didn't notice a limp. She seems fine except she will not get out of the nest box! Broody # 2 is out in the chicken yard, so I go check on the eggs & they're cold. It's probably a lost cause, but I brought them into my gal in the house & she seemed very pleased. Ugh, it's my 1st time w broodies & they're putting me through the ringer!