Pinless Peepers for 5 week old chicks

[Balistikb]

I have a problem with two of my chicks picking the head of my white crested polish. They got her so bad it created an open wound. Right now the polish is separated but I wanted to try the peepers she she could join her clan again.
My question is, how old do they have to be to wear these? I tried putting it on one and she freaked out a lot so it took it off. I felt like she may be too young and I hurt her.
Has anyone used this on chicks? If so, how young?

 

[Kiki]

I don't believe they are made for chicks that young.

How much room do you have for these birds?

 

[Balistikb]

They are in a temporary spot until they are big enough to go outside in the coop. The box is 5x3 with plenty of water and food.

 

[aart]

They are in a temporary spot until they are big enough to go outside in the coop. The box is 5x3 with plenty of water and food.

How many chicks total?

 

[Kiki]

They are in a temporary spot until they are big enough to go outside in the coop. The box is 5x3 with plenty of water and food.

I am going to guess your box (the space) is the problem.
Can you post a few pictures of this box and birds?

 

[Balistikb]

How many chicks total?

6 chicks

 

[Balistikb]

I am going to guess your box (the space) is the problem.
Can you post a few pictures of this box and birds?

 

[aart]

Time for them to go out into the coop.

 

[Balistikb]

I will be putting them in the coop in one more week. I would say that doesn't solve my issue though. I have placed them all in the run so they could start getting used to it and after a short while, she was getting pecked again. I wouldn't say it is the space in that case because the run is 6x14.
Any other thoughts on the peepers?

 

[aart]

I think 5weeks is awfully young for pinless peepers.
@azygous article on bullying might help:
https://www.backyardchickens.com/articles/chicken-bully-chicken-victim-a-two-sided-issue.73923/