For the past week or so my girls have actually been waiting for me at the gate to go out in the mornings and afternoon. This is definitely not their normal behavior. I used to have to open the gate and go about my daily duck chores before they'd stop swimming, grooming or chatting with each other under the tall grass.
The weirdest thing they're doing now is running up on top of our well house roof. it has a flat-type slightly pitched roof. They stand up there and stamp their feet and flap their wings. A few times a week one will actually get air borne and flap-fly about 30 feet away. Due to the height difference in the terrain they can get really high. My best estimate is around 10-15 feet off the ground. As soon as they land they run back up the hill to get on top of the well house. Scares me every time they do it because they're so high in the air.
They'd never even shown in any interest in the structure prior to the past week.
They're more clingy when they're free ranging with me.. wont get more than 2-3 feet away. And they're quick to go to bed each night, too.
We've had our first snow fall in the past week, our first killing frost and two nights in a row of sub 20 degree temps since the weird well house behavior started. and they haven't seemed bothered or put out by any of it.