Hi All, about a week ago a dipper appeared on our window ledge and has barely left since. He spends a couple of hours each day going through some kind of ritual, fluffing his feathers, cheeping and flapping against the window pane as if attempting to come in. It would be rather endearing if it wasn't for the fact he poos all over our windows! And I'm wondering how best to help him. Any advice? I should add we do leave bird food out on the bird table in a separate part of the garden...he doesn't seem particularly interested. Thanks in advance.