For those on Facebook, Will Randall has posted five (I believe) images from an aerial altercation between a Bald Eagle and an Osprey on the Florida Wildlife Photographers page: https://www.facebook.com/groups/122488197809623/
Scroll down to the five -image entry on Febuary 19 at 2:52 PM; it's way down the page. It's worth the look.
And yes, Will uses Nikon equipment.
WM
He's also on Flickr