They say on this Duck My Life website that every website should have a shooting duck app, where visitors simply aim the crosshairs using the mouse at the moving duck and to fire hit click, its fun but I am not sure that all sites will go for it!
These are the details for the Duck My Life app for your website;
Bookmarklet: Duck my life – Drag to your bookmarks bar and click for ducks on any site. Duck carnage where you want it, when you want it.
Source [Duck My Life]