Hi Adele, perhaps you can have a look here for a similar thread from a few years ago. I hope this may be of help to you.
My bird photos HERE
Thank you, will try some grated cheese when the chickens are in their run or they will eat it. The Wagtail does come up close to the house and seems to like being near the chickens, the smaller of the bantams and the wagtail sat on opposite corners of the roof of the run this afternoon just looking at one another.