*gulps at the thought of 'lil Fiona sneaking in and out of the chicken run* .... I hope you don't have foxes around, Nadi!
We definitely have foxes but the hens are locked away tight at night and the foxes don't come near them during the day because of our three dogs are the most amazing guard dogs against predators. In 18 years we've only ever lost one hen to a fox when they weren't locked up one night. Even then she died of fright - no actual injury because the dogs were on that fox so incredibly fast and it did not have a chance to bite or choke. We have been very lucky.