Not the best day or equipment; it was overcast and i forgot my Canon 1.4x but had my Canon 2x and Tamron 1.4x. But the mating pair of white-tailed kites was a great opportunity.

Taken with 1D Mark3 and 500mm with Tamron 1.4x on the equivalent of a monopod (Gitzo 1325 with legs folded since i didn't want to waste time setting up the tripod). Manual exposure, iso1000, f/5.6 and 1/1600. The Tamron 1.4x seems to be prone to red-fringing.