PLEASE HELP....I just went out and saw this thing hanging from one of my hens. I tried to pull it thinking it was poop but it didn't want to break away and it seemed like I was pulling something connected to her so I stopped. What is it? I just have 3 hens and they are 2 years old. I have photos but can't load them as I don't see an attachment link. But, this thing is HUGE and hard.