How Big Is An Osprey Nest?

Makeup Day 3: Without anything for a size comparison (and fir cones don't count), it's difficult to comprehend just how enormous an Osprey nest is. Earlier in the year when I was out on Lake St. Clair, I watched the parents diving for fish and returning to the nest to feed at least two hungry young whose heads barely popped up above the rim of the structure. Now the little ones are gone, but the nest remains and will be used again next year. So how big is it? Look on the shoreline of the lake just to the left of the golden tree. Those are two rowboats on the bank and a house just to the left of them. The nest is about the same size as one of the boats.