Then one year the Canadian geese established a spring nest there. They arrive about two weeks earlier. When the Osprey flew in, they tried, without success, to remove the sitting Canadian geese. You can go to the link here for that event.
This spring we hired a helper to clean off the platform which was six inches thick (after a decade or more) with fish skeletons, crab shells, mud, and grasses. There was so much detritus that grasses bloomed up there each spring.
This is not a job for the faint of heart, as you can see. This gentleman has experience working high electric lines, so is most capable at a job that requires height. After a short while the platform was clean.
The geese reappeared the week before to survey their domain. When they arrived again, two days later, they were loud in their protest to find their place had been "redecorated." The female explored every corner.