Ha ha, I really like how articulate you are in chicken speak, LOL! I'm definetly no expert but sounds like one of two things that I recognize. First, as everyone is saying, it could be auditions for The Egg Dance. Second (though less likely given the circumstantial evidence) this is the song of a startled chicken (usually by preditors) but then, if a large white egg fell out of me I'd be pretty startled too
so they could be interconnected lol. Just my speculation.
For a better interpretation, however, Gail Damerow recently published an extensive article in Backyard Poultry (the edition featuring naked necks) about Chicken Speak.

For a better interpretation, however, Gail Damerow recently published an extensive article in Backyard Poultry (the edition featuring naked necks) about Chicken Speak.