Please give me some advice, My silkie hen is limping and when I checked her feet this morning her nail was bloody. This happened to my roo a couple weeks ago. The only difference is that he lost his nail and she still has most of her's. Do I have to clip the nails? They aren't very long and they walk on concert and gravel alot. How do they break off and are they that brittle? These are my first chickens so every little thing that happens is new. Thanks for the help!