hello my experience, in my flock, ive seen those 2 symptoms independent from each other at separate times. The eye swelling ended up trying to turn into Coryza which is an upper respiratory infection in chickens, and sometimes Quails, Pheasants....caught it in time to keep it from infecting the flock, very hot and humid in my area in the summer, this doesn't help. quarantined the 2 birds, and treated them organically with herbs and such, also used some VETrx as well and it cleared, hasn't resurfaced, the neck stretch yawn accompanied with the head toss from side to side happened to my 2 Jersey Giant rosters, quarantined those 2 and gave them organic herbal doses, turned out that in my rooster's they were gape worms, in each case cleaned out the runs, disinfected, laid down fresh clean bedding, roosters are fine now, just sharing my experience as an FYI with you, I learned much in this forum from people sharing they're experience's like this, helped tremendously by expanding my understanding and knowledge on many poultry related health issues, I myself, like you am in the habit of watching my flock closely and I know them, so the minute i notice even 1 of them is "off" I'm on it...I'm very grateful to the BYC family......Good Luck!
