Feeding a Pied Wagtail

A lone pied wagtail with a leg injury has been visiting the garden for a couple of months now. It never seems to get a look in for the food I put out - edged out by the bigger birds. I put out seed mixtures, fat balls, suet blocks and dried mealworm - sometimes soaked as the chickens like it. What tit bits might it be looking for? It does seem to like the chicken house and run though and can often be seen hopping around the edge of the chicken territory or sitting on top of the run or the house.