The ‘family’ name given to a group of birds, such as the crow, magpie, hooded crow, jackdaw etc.
These larger birds can be a general nuisance and be aggressive to smaller birds. Crows have been known to eat a sparrow. They are clever at building nests inside chimneys, often blocking them. The best method to deter them from chimney nesting sites, is to use chimney balloons / cowls/ spikes. Bioacoustics are good to cover large area dispersal.