So, I wanted to make sure that the Jersey was bred, so put her and the bull into the front paddock where I could keep an eye on them. Well, there was lots of mooing going on from MacGregor the Dexter x bull, but his attention was across the road towards my neighbours herd of mixed beef cattle. I suggested to DH to get him and the Jersey into the middle paddock to make sure he didnt' make any advances, and I didn't want to hear him serenading all night anyway.
So, the Brahman cow that was returning his bellows, wasn't a cow at all, but a great big bull with horns. By the time DH got down there, the Brahman was pawing the ground and fit to bust a gut at the little upstart across the road that was mooing sweet nothings to his girls!
DH moved MacGregor and all is quiet now... and he doesn't look remotely interested in the Jersey, so here's hoping she's bred!