Would this do?
http://www.alandmills.co.uk/grass2.mp3
Styrange that niormal noise reduction didn't seem to work. I first tried the normal, of capturing the noise profile, i.e. a section of just the noise to be removed and then applied that filter across the whole thing. It seemed to do next to nothing.
So I changed view in Adobe Audition and noticed that the 'noise' was all up at around 8000Hz, so I opened the VST Eq effect dialogue and chose the Default profile then selected the 'high' dial. When the green dot appeared intot he profile view I dragged it to the bottom to remove these frequenceies - or atleast reduce them down.