I dont hear any distress noise.
It sounds like plain old happy chicken talk.
I just rehomed 6 isa browns from a local lady that keeps like 300 birds then gives away the birds that are 2 years old or older. She sells eggs to the schools and nursing homes. A nice older lady that talked my ear off the entire time i was there.
She told me she is constantantly talking to the girls telling them how pretty they are and what nice eggs they lay, and not to fight with each other, hey be nice and dont pick on your sister, and on and on..
Anyway i got these 6 hens home and i notice they are ALWAYS talking to me, and to each other. I love it.
I wonder what they are saying to me!
Your girls are fine.
Enjoy!