I have a Silkie almost 5 months old. She was fine this morning but this afternoon she stopped eating. She separated herself from the other 2 chicks I have. She just lays or stands not moving and when I offer her food she'll pick it up then laid it down. The only outward sign that's different from the others is her little comb has turned red up next to the hairline. The other Silkie's is all black. today she's let me pick her up with no protest before she'd run and play before letting me pick her up. Can anyone help? Thanks.