It might be an old thread but it's a classic!
I love Windchyme's observations
The long stretchy neck is kind of an acknowledgment of your presence, but the "verbalizations" tell you what the goose is thinking.
It's when the head is down low and the neck is snaked back on itself that I know I'm in trouble .
It was so cute when the evil gander Pinhead in my first flock would run at me to warn me away, then run back to the flock with his head stuck straight up in the air honking away, bragging that he vanquished the interloper. The other geese would join in with long stretchy necks to congratulate him lol.
He would alternately eat out of my hand and bite the daylights out of me, all within the same moment. He couldn't decide what to do.
I love how the whole flock sleeps at the same time, grooms and fluffs at the same time.