I have noticed for the past 2 days one of my hens has been doing a weird noise. And when she does it, it looks like she moves her head while she is coughing, I don’t know what this is.
Can you take a video of her - upload it to youtube, provide a link. I would check inside her beak to make sure there is no obstruction, canker or lesions. Check her crop first thing in the morning before she eats/drinks, it should be empty. See that she is eating/drinking well and having no trouble with that. Look her over really well for any signs of watery/bubbly eyes, facial swelling or mucous from the nostrils.