Parrot knocks after excursion in the window

Now hello, my free-flying ama zones come back with the weather earlier from her excursions and I am not also any more so often outdoors if they come back. If I do not notice that they want purely, Kiri on the windowsill flown comes and knocks with the beak at the window pane. Yesterday I have taken up sometimes on video and you should have a look at this sometimes.
knocks in the window