A Squeaky Squawk?

[MontanaMomma]

Yesterday morning as I was making breakfast I heard a sound similar to a very loud rusty gate being opened in the yard. I wasn't sure what it was! I went outside to find one of my 4 month-old Leghorn hens has a squeaky Squawk! Otherwise she seemed fine- eating and walking around busy being a chicken. But she stops, raises her head every so often and SQUEAKS! The other four hens seem somewhat startled and perhaps concerned... But I can't be sure about thier take. Today she seems fine as well, but still squeaky squawking!

Any ideas?

 

[Big Red Hen]

I think their voices are maturing into a cluck..lol....mine have been making that squawking noise too. Mine are 18 weeks.