My husband and I are new to chickens . We have 8. This morning he noticed strange behavior from one of our Rhode Island Reds. She keeps putting her head down between her two front feet and shaking her head and is walking backward and falling over . She's keeping her eyes closed most of the time. We've gotten her to peck the ground a little and sip some water and gave her some Nutri-drench . Everything I've researched is sounding like the neck issue from a vitamin deficiency but I'm really concerned . She looks in very bad shape. She is about a month old. Non of the others are showing any signs like her . She was fine around 10-11 pm last night and my husband noticed her acting this was around 7:30. Any help or suggestions are greatly appreciated .