HERE, and HERE.
But life is not just shorebirds, and after I was done shooting those, I set out to walk the entire hatchery and see what the other ponds and wetlands might hold.
Turkey Vultures are conspicuous on the wing, with their six and a half foot wingspans. Despite the birds' massive size, they can be harder to make crisp images of than one might think. That's because the bird is often FAR away, much further than one might think. Huge crops in post-processing often produce a rather noisy image that lacks in crispness. But this situation allowed close access. I stood on the edge of a fencerow and shot the birds as they came and went.
So, to experiment, I took the 1.4x teleconverter off, and tried shooting the birds with the straight 500mm off the tripod. I probably should have tried for some handheld shots as well, but the big lens acts a bit like a kite in windy conditions, and that makes it hard to get sharp shots. This image came out OK. It was shot at f/7.1, 1/2000, ISO 500, and -1/3rd stop exposure compensation.