Bluebird bluebird, through my window,
bluebird, bluebird, through my window;
bluebird bluebird, through my window,
You're the one, my darling.

Everyone in a circle with hands joined, arms up. One child -- the bluebird -- goes in and out the "windows" until the song is finished, and then picks someone to be another bluebird. Continue until everyone is going in and out, and it's chaos.

I'd try to tap it out in solfage, but I usually screew that up. Any simple tune will do.

Another I do just about any ol' time is:

Circel to the left, the old brass wagon,
circle to the left, the old brass wagon,
You're the one, my darling.

right -- in to the center --

The great thing about these is you're training the next generation of square dancers.