Even though the copy of the Leica f/2.8 200mm lens is a pre-production unit I foun it performing exceptionally well. It focuses fast and the camera and lens combination have no problems following birds in flight.
This was a very active nest. The adult had brought 5 or 6 fish and regurgitated them multiple times.
This was the first time I witnessed a Green Heron Sky-Pointing which is a very common mating behavior with Great Blue Herons and various Egrets.
Ding Darling NWR was a big disappointment. The birds were sparse with the exception of Pelicans, Willets, Dowitchers and Dunlins. As the sun set, these Pelicans started departing the sand-bar they were on, probably to roost elsewhere.