Our 4 chickens have only been laying a few days. One of them went into the nest box and laid an egg today - I was there, so collected it - attached to it was what looked like poo, but there was a tiny thin white worm wriggling in it. I have been adding cider vinegar to the water and change this every day and the coop and run has been cleaned regularly - all the birds seem perfectly healthy. Any ideas what this is and how can I get rid of it
Thanks
Bobby