This Bald Eagle (Haliaeetus leucocephalus) flew into the salt marsh scattering all of the birds except the Ospreys (Pandion haliaetus) either to the far remote corners of the salt marsh or completely out. The Ospreys are not afraid of bald eagles. In this photo, it appears the Bald Eagle is chasing the Osprey but it is the opposite. The Osprey is above the Bald Eagle and is shadowing it to keep it away from the Osprey nests.
This Osprey had been on its nest for most of the morning chirping away. The three other Ospreys that share the nest were out and about. The Osprey must have decided it needed some exercise. It swooped down from the nest and took one fast lap around the salt marsh returning to its nest. It stayed there for the rest of the morning, just chirping away.
Osprey Flying with a River Herring
The Ospreys (Pandion haliagetus) were out in force today diving for River Herring or Alewifes. The herring move into estuaries (a partially enclosed body of brackish water with one or more streams flowing into it and with a free connection to the ocean) and swim upstream to breed in fresh water and then swim back out to the ocean. The Ospreys are waiting for the herring as they move into and out of the estuary.