From RRP's FB page:
Raptor Resource Project
19 hrs
While we aren't seeing quite as many birds on the Mississippi Flyway cam right now, eagles are still attracted to stretches of open water near the island. This video gives a nice look at two eagles interacting. Slow the video down and in the seventh second you will see the flying eagle swoop in with its feet down, while the perched eagle jumps up and puts its talons out:
https://youtu.be/2StqpGVNZXM. Was this interaction serious or playful? Maybe a bit of both. While the flying eagle knocks the perched eagle off, it doesn't come back for more interaction and the perched eagle isn't harmed.
Coming in. The flying eagle has circled in and the perched eagle is ready for an interaction. Both are adults, but I'm not willing to guess sex.
Talons up! Consider this a ground-based lock and whirl. No air, no whirl! Having said that, we've seen falcons do the same thing. We can think of two sites - Dubuque and Cohasset - where females stay in the nest instead of flying and attacking. When approached during banding, they sometimes roll over and foot - very similar to what we are seeing here.