Crows can GTF. A pair built a nest in one of the Celine Towers trees last year. One of them stole some mince I'd left on the kitchen windowsill to thaw out. I saw it, or its mate, steal some baby chaffinches from a nest in the hedge. The crows and their own offspring used to argue loudly every morning from 4 am for two hours.
Their nest was quite impressive, it survived storm Arwen and last winter's other storms. It also protected them from air gun pellets when they tried to move back in this year, but they eventually got fed up and moved elsewhere.