Our little hummingbird friends are still visiting, but I know they will be flying on soon. I had always heard to take down your feeders, as leaving them up would encourage them to stay. Hummingbirds migrate in response to the decreasing length of daylight. The Oklahoma information I found was to keep up your feeders for a couple of weeks after you have seen the last hummer, in case any stragglers come through. They'll certainly appreciate the food when natural resources are low.
my heart belongs to you
5 hours ago