As photoperiod shortens and light intensity lessens my birds are compressing their activities into fewer and fewer hours. I think the shortened day makes it more difficult for birds to eat, especially when they must find their own food. This last full moon the birds actually came off roost a 2:00 AM. They were trying to make themselves owl bait. They could not see well enough to forage so they went back to roost after about 45 minutes or so. Those of you with birds at very high latitudes seen such behavior?