Greater Yellowleg, Mississippi Valley, Green Island Wetlands, Iowa
The weather this week was not very pleasant, with temperatures around the freezing point, rain, even a little bit of snow, and almost no sun in the sky.This changed finally today and I could realize my plans going for some wildlife shooting to the Green Island Wetlands in the Mississippi Valley this evening. All the clouds disappeared and the best thing was that the air stayed relatively cool, means it was clear and the often feared heat shimmer above the surface of the wetland didn’t occur. With other words, great shooting conditions.
I saw lots of ducks, mostly Wood Ducks and Northern Shovelers, of course Canada Geese, Bald Eagles, the local Northern Harrier, and a small number of Tree Swallows. But the most exciting encounter were three Greater Yellowlegs. These migrating sandpipers were feeding in the shallow water at Green Island but they were quite a bit away. By attaching the 1.4x Teleconverter to the lens my focal length went up to 850 mm. This seemed still not close enough and I set the camera to ”crop mode”, which uses a smaller part of the sensor only, but gave me the equivalent of 1275 mm focal length. I thought without heat shimmer, as often present at this time of the year above the water surface, I can try it and had indeed quite a few sharp images.
Before driving back home I headed to the gravel road on the westside of the wetlands and found another Greater Yellowleg foraging in the water that covered the field below after the rain. The sun was setting behind me and the bird still searched for food and flew away only after all direct light was gone.
Nikon Z6II, Nikon FTZ adapter, Sigma 150-600mm / f5-6.3 DG OS HSM S, Sigma APO Teleconverter 1.4x EX DG, @850 mm (1275 mm DX mode), 1/1250 s, f/9, ISO800