We have a small bird, a stonechat I believe. It has been with us since the beginning of September (5 months now) and comes to our bedroom window from first light, tapping at the window by flying up and down against the window and hitting it with either it's feet or wing. I have lowered the outside blind so it cannot fly to the top of the window allowing it to hit the window harder. It stays around most of the day, every day and is often still around the window area till half light in the evening.
Today, it has been tapping the window with a beak full of nest material!!
Can anyone explain this behaviour to me please?