And they can put an elasticated collar with bell attached on him so it will make it harder for him to kill or maim birds (which all cat owners should do).
This lot specialise in rescuing wild birds in London. They're brilliant! There's an emergency phone number to ring.
https://www.londonwildlifeprotection.org/
Helen
Posh mummies and daddies with all the gear (gold helmets, trendy jackets, paniers fore and aft) love to brandish the kiddywinks they carry as a kind of carte blanche to cycle on footpaths, even when they’re right next to a cycle lane and/or a LTN. Resist! (Lycra-clad “professionals”, though, are often courteous and law-abiding, stopping at zebras and knowing their place is on the road and not the pavement.)