Hokey cokey

Walked round a pretty boring looking park after visiting a relative and doing some catch up on the family tree. I went to investigate the very loud "baahing" noises from over the fence that could be heard from the other side of the park.  No idea what was up but the noisy ones in the front seemed to be leading the others on a hokey cokey type dance round the field, perhaps they were singing! There were hundreds of sheep in the field - I think they were all singing.  It was so noisy, shame I can't post a video with sound.