Is it a gaggle of Rowdys or herd of Rowdys? What about flock? Didn't Flock of Rowdys have a popular song once?
Thanks Xelda, You've managed to bring up My no.1 pet hate.....the ridiculous number of collective nouns for animals.
What really annoys Me, is that after using the specialised noun for a particular animal type, You then immediately name the animal anyway......for instance "on safari We saw a congress of Baboons", You wouldn't just say "on safari We saw a congress", so what exactly is the point of giving Baboons a personalized collective noun?
You could trim the number of collective nouns for animals down to about 6 and it would make no difference at all, except to simplify things.
p.s I looked it up and it's a Bolus of Rowdys, Mah bahd.