My approx. 4 month old pullet won't stop chirping

[Chickener_]

could someone please help? my pullet won't stop chirping. she makes high pitched chirps nonstop. they are especially loud when people walk near her. she is also very afraid of people (any advice on how i could get her more comfortable?). my other pullets (same age) are already clucking so I don't think she should still be chirping this much. is something wrong and should i be worried? help much appreciated.

there are some videos below with her chirping noises.

 

[Perris]

I don't think it's anything to worry about. I had one like this last year; constant chirping drove us all nuts as the months went by. I think he finally stopped at about 5 months. As with your pullet, the siblings had stopped chirping much earlier. I guess it's just an idiosyncratic behaviour.

 

[Crazy Maizie]

One of my EE is a talker and she chirps while walking and in general. She also has one of the loudest egg songs. She's 2. She also let's me scoop her up to have a conversation.