Re the post below, we have big numbers of pipistrelles in our roofs and we often see a male sparrowhawk in the garden at dusk. One year, a male sparrowhawk used to perch on the corner of the conservatory waiting for the bats to emerge - I never saw him catch one and I imagine it would be quite difficult as the bats only emerge when it is getting quite dark - but perhaps he could see quite well in the dusk with those big glaring yellow eyes!
