How odd, maybe someone was romping in the hay and the ribbon fell out of their hair:? I think if the rabbits ate it which they may not have, it probably wouldn't have been much and hopefully not done any harm however, there is a problem obviously with the processing if it got in there so I would probably mention it, personally I think the quality of their hay is appaulling so don't buy it myself, when they stock anything half decent I might buy a bag but, in reality i will expect all the standards of pet care instore to be way higher than it is currently - I don't like going shopping and coming home depressed from what I have seen.