Air assault 
Ronnie’s been caught on camera stealing from Derek – see video below.
It’s the usual routine – Derek goes to the side of their house with a couple of rat nuggets, then Ronnie spots him, goes up on top of the house and launches an air assault by stealing one of the nuggets Derek has. Usually there’s a bit of protestive squeaking from Derek but he was quiet this time.
I suspect Derek takes two nuggets because he knows Ronnie’s likely to steal one. It’s a mystery though why Derek always goes down the side of the house when he must realise Ronnie will be a thief – but perhaps it’s more of a mystery why Ronnie has to steal from Derek in the first place when they both have easy access to the nuggets!