Iain MacLeod, the executive director of the Squam Lakes Natural Science Center works closely with PSNH and NH Audubon to help protect the Osprey population. He started a program in NH to monitor and help increase their numbers. I think he builds these nests in his garage... he is responsible, along with PSNH, and NHA for "relocating" several Osprey nests, including the one at Ayers Island, which has a webcam-thanks to PSNH. You can watch these beautiful raptors raise their family. Here is the site:
http://www.psnh.com/Environment/Osprey-Online.aspx