I get the barred rock/dominique thing all the time - I just smile and say thank you (when they say they like my dominikers)
I figure A) they are wanting to buy them so why should I offend them right off by arguing about what type of chicken it is - although when I mention the birds in the subsequent conversation I do call them Barred Rocks, it's up to them to catch the subtle hint, though.
or B) they are just admiring my chickens, and I can be graceful and say Thank You without a lecture on breeds.
Either way, whether they know it is a Barred Rock or a Dominique or an Emu, it's no skin off my butt - so I don't get my panties in a twist over it.
meri