The Raptor Resource Project has a live stream on Ustream. Go to Ustream.com and search for "Decorah eagles." There is also a link on the webpage of the Raptor Resource Project.
The Project's webpage is raptorresource.org, and there is an option on the right side of the page for BirdCams. It takes you to a page with the Ustream embedded in it, so either option should work. The stream may occasionally go down for camera upkeep and such, so it may take several attempts to find a live feed on the site. It may also depend on the time of year, since the eagles may not be nesting year-round.