One of my Silkie hens is sick and I have no idea what to do. Yesterday she was stumbling a bit. No one else noticed but me. Then last night she didn't walk in the coup but was laying at the bottom. Normally they all go inside. Then this morning when I let all the birds out she staid in the same spot. She is just standing with her eyes closed. What do I do? She is my daughters pet and my husband wants to take her to the vet. Any advice would be great.