This was one of two times I've been able to get close to some of them. The other time I had one that let me work close eneough to be using my 100mm for full frame. But I was shooting my Konica/Minolta 7D DSLR and my Metz flash was not working well on this body. The bird was in deep shadows and I need the flash to illuminate and slow it's motions. When I got back though I had overexposed and blown out the whites on it's body. Really frustrating as I had laid on my belly in the mud for about 20 minutes while the bird just pranced around in front of me.