One of my two Partridge Rock hens has been broody for probably about 3 weeks, I've tried the dunking her belly/chest in cold water theory...it got her off the nest for a little while. Probably just until she dried off. I was nervous about putting ice under her in the nest because I didn't want it to freeze to her and give her frostbite...but I decided to give that a shot. I wrapped the ice cubes in paper towels first though in an attempt to keep the ice from sticking to her. That didn't work either. I guess the only other option is the wire bottomed cage, but I just don't have the time or skill to put something like that together.
Anyway. This afternoon when I lifted her up to see if she was sitting on any eggs (I collect any eggs that she might have under her every day, and we don't have a rooster so there's no chance she'd hatch anything even if I did leave something for her) and I noticed this yucky looking spot on her breastbone area. At least I think it's her breastbone. It's on her chest/upper belly area along a bone. It's greenish yellow and looks very much like a slimy wet scab, except it doesn't feel at all scabby and isn't wet.
Does it look like something that I should be concerned about, or does it look like she's just developed a bit of irritation from sitting on this nest for so long?? She's also starting to look a little thin, not really sickly thin, just like she hasn't been off the nest much in the past 3 weeks.
Thanks!
Anyway. This afternoon when I lifted her up to see if she was sitting on any eggs (I collect any eggs that she might have under her every day, and we don't have a rooster so there's no chance she'd hatch anything even if I did leave something for her) and I noticed this yucky looking spot on her breastbone area. At least I think it's her breastbone. It's on her chest/upper belly area along a bone. It's greenish yellow and looks very much like a slimy wet scab, except it doesn't feel at all scabby and isn't wet.

Does it look like something that I should be concerned about, or does it look like she's just developed a bit of irritation from sitting on this nest for so long?? She's also starting to look a little thin, not really sickly thin, just like she hasn't been off the nest much in the past 3 weeks.
Thanks!