Captured these few yesterday morning out in the exact same spot where I took the images that are in that competition. When this Reddish Egert happened along, the light was kind of "unpredictable" depending on the area he moved into, so a bit of fill flash was an option. Now, unfortunately, this particular bird is transitioning into breeding plumage, so he looks a bit ratty right now. But, he still made for a good practice subject. Can you tell which image(s) I used the flash on? No cheating....don't look at the EXIF until AFTER you post :-)
After you all guess for awhile, I'll explain my flash settings and why...