Suffolk Miracle's translation is fine,   

Is there another goat?
Yes, not yet milked,
On the sharp rocks
The old goat roams.

A white, white, white goat,
Yes, white mouthed,
bald whitetailed, bald whitetailed,
White shoulder and tail,
White, white,white.

Then black, red, and blue (grey). The one generally known is probably my least favourite Welsh traditional song, largely because it was the only one people ever used to sing socially. There are around 17 Welsh goat-counting songs and some of them are crackin' good.

sian