We have had our hens for nearly a year now, two were given to us and two were rescued including our rooster. One of the light Sussex that was given to us has been stretching her neck and making a loud "TOCK" sound and shaking her head whenever she eats the layer mash, ever since we had her. I thought it was just the fine layer mash because it sits on her tongue when she sticks it out and she acts like its stuck in her throat and just trying to swallow it. That is the only time I have really noticed her do it. We had a chick hatch in January and it seems to be her chick (Isa brown x Light Sussex) because of its size (already larger than our Isa Hen) and brown colour. Now that the chick is old enough, she is also eating the layer mash and making the same noise and neck stretching/gagging movements. Whether its the mash or just that she's old enough to actually have gape worm I don't know. Are those the symptoms of Gape worm or something else? And what can I treat them with?
