All About Birds from the Cornell Lab of Ornithology is the internet’s best resource for bird information. Their entry for Osprey (Pandion haliaetus) says that osprey are one of the largest birds of prey in North America and one of the most widespread birds in the world, found on all continents except Antarctica. More about osprey at Wikipedia and at Pandion haliaetus (Osprey) from the UM Animal Diversity web.
The Michigan DNR’s Osprey page begins:
The “fish hawk” is brown above and white below, and files with a distinct bend in its wing at the “wrist.” Their feet are equipped with spiny scales and long talons that give them a firm grip on slippery fish, their only prey. Ospreys usually select tall trees in marshes along streams, lakes or man made floodings. They will adapt to artificial nesting platforms. This “help” from humans, along with the restriction of certain harmful pesticides, has helped ospreys recover from the drastic population reductions seen in the 1950s and ’60s. The Nongame Wildlife Fund located 166 pairs in 1988, up from the 81 counted in 1975.
Rodney took this photo of an osprey building its nest in Milford.
MichiganOsprey.com is a great local resource and adds:
Like Bald Eagles, Ospreys often reuse old nests, adding new material to them each season. Ospreys prefer nests near water, especially in large trees, but will also nest on artificial platforms. Ospreys three years or older usually mate for life, and their spring courtship begins a five-month period when they raise their young.
Michigan in Pictures has lots more Michigan Bird photos!!