here is the link to the video!
Sounds very like how my two girls sound most of the time during the laying season, especially whenever they are broody or close to becoming broody. They went back to their normal trilling once their hormones calmed down (sort of) over the winter. I am currently out of the country, but I do have a couple of videos of mine squeaking/chirping that I will post once I get home so that you can compare!