Me thinks there will be duck eggs soon enough?

Hand held! Wow indeed!

Can't understand why this image has received no comment? It's very well shot, sharp, colourful and a great diffused background. What's not to like? Regards David x2

Very well exposed and framed. I like that you didn't use an overly long exposure on this, so I get a sense of the water splashing.

Razor sharp! DA Star 300mm?

A scorcher of a day well rendered.

Ah, the mountains and the water they produce. Well done!

I think this is very well spotted and not an easy capture. Well done!

Andrew, :D:D:D

500mm lenses usually require maximum aperture, if not fixed aperture. Dirty sensors become very apparent. There are several cleaners - from powerful bulb blowers, through sticky swabs to battery-spun static charged carbon fiber brushes. I'd start with a Giottos rocket blower - quite reasonable and handy for other uses (lenses, mirror). If your dust is new and dry, the blower may do ...