very nice, this is what i intend to use my sx50 for. if we ever have any decent weather that is. its been a very dull, wet breezy year in the uk.
I know what you mean about overcast days. No substitute for good light. Some cloudy days can be fairly bright though. With ISO 400 snd a monopod, I have had some pleasing results, if not the best image quality. Here's a recent post on overcast birds.