Chiffchaff. Nuthatch. Great tit. Robin. Great spotted woodpecker.
A nuthatch goes to its nest in a nestbox.
A short-toed treecreeper climbing up a tree.
A male chaffinch on the roof a small building.
A greenfinch singing.
This is a video of a sparrowhawk eating a house sparrow.
A sparrowhawk high in the air. Later, several buzzards.
Dutch birds in nestboxes in 2009: here.
Making nestboxes with consideration of species: here.