I can't see the noise you describe. Using the SX30 how did you set the camera up to reach the 3360mm Alan?
Yesterday I visited the Wildlife Photographer exhibition of the year in Cape Town where the winners, the runners up and those whose photos were highly commended talked how they achieved the best photos from around the world. A mix of skill, trial and error, patience and luck! Photography at the exhibition was not allowed. It was a treat and gave me a few ideas.
Some of the photos I have seen on site here are in my opinion of the same standard I saw yesterday. Not mentioning any names, as you know who you are