Moosehorn National Wildlife Refuge recently shared the following information to its Facebook page:  The original bald eagle nesting platform on the Magurrewock Marsh was erected in the late 1980s and was intended for use by ospreys as an alternative to potentially nesting on nearby electrical transmission line poles.  The platform was first used by ospreys in 1990, but in 1991 a pair of bald eagles re-established their territory and took over the platform.