Here some photos I took this summer of them:and their nests:
And a video in the early morning as I was walking to work. They were all swarming out for food and the first flights of the young ones to strengthen their wings:
And today, they were all here at my house, half way up the hill, but flying very, very low:
They flew for another hour or so this low. Then they moved a bit higher into the air and lower down into the valley - circling big Linden tree and the church tower.
Soon, they will all fly South for the Winter time they are expecting. I can already see them collecting en masse on wires.