I used to play this on the piano accordion (PA) but I will work it out with an English concertina (no longer play the PA). This is my silly turkey song...there is one more verse to it, too, that I wrote later. I am just a wee bit proud of the fact that I managed to progress around the Circle Of Fifths with 11 consecutive chords in one part, and that I used so many chords in this (more than 3!).
The progression of fifths (okay, so maybe it's a progression of fourths, technically or depending on where you're standing) starts at the chorus. The Bb7 moves 'down' to an Eb7, then the chords progress around the circle all the way to a C. (Yup, I prefer to call a Db7 a C#7, etc..)