Dammn ... just missed it with the towel! Oh well, at least I know that it can fly as far as the neighbour's bungalow roof (albeit reluctantly, and after much scuttling!)
As it has been around for a couple of days, I imagine it will be back for more seed shortly, so I'll get a box in readiness!
No, it isn't with any other birds Pete. (In fact, I'm a tad worried because the local magpie hoodlum is hanging around ... do they attack weary pigeons?)
Many thanks for the advice folks.
ZED