I have a version of the song that I got from the singing of Ed Miller, that may be a little more accurate in some parts. By the way, the last line is, "When the gang-aboot folk tak' tae the road," i.e., when the Traveling Folk, or Scottish Gypsies, take to the road.

I'm going to bring up my version again for you. The thread title is something like "The Yellow's on the Broom." You could probably also find it by searching the archive of threads for yellow, or broom. That's what I'm going to try.

By the way, thanks, Bigi, I didn't know a yorling was a yellowhammer. Are you sure that Blair is Blairgowrie? There is also Blair Atholl, near Pitlochry. "To the plantin' and the pearlin'" means just that, according to Ed Miller: the traveling people used to gather freshwater pearls, and maybe they still do.