I just noticed this on the back of my hen’s thigh. I tried to gently squeeze it but it appeared to bother her. I haven’t seen anything similar on this site. It looks like a large scabbed pimple about the size of a pea. Not sure if it’s an ingrown feather because it doesn’t look like the photos of that or cysts. We’re in San Diego and haven’t had issues with bot flies, etc. Thanks in advance!