Okay this is a weird one. Horse is at new farm, has been stressed by the change (no more so than the average bear who takes a bit to settle in). Horse has head down on ground in stall, appearing to contentedly munch hay. Zero distress. But he’s making whinnying sounds—not the full out whinnying when they call to others, but the long clear squeak sounds. Very clear it was a whinny and not say, abnormal breathing or something stuck in his throat. Horse was given a once-over and nothing else was abnormal. Behaved fine otherwise.
Is he: delighted with his hay?
Registering a complaint?
Talking to ghosts?
Seriously, never seen this behavior from horse before. He wasn’t asleep either—clearly nosing through hay and he never lifted head up while doing this.