This is easily the best shot of a Red kite that I've ever managed to get, with a backlit glow and reasonably sharp eyes (click the photo for a larger version).
It's a shame this bird is only just recognisable as a kite though. It's so tatty! The distinctive V tail needs a little bit of imagination to see, and the wing feathers aren't much better. I even had to think twice about whether it really was a kite or just a buzzard, but the length of the tail and those distinctive white patches on the wings make it clear. If I was better at this game I'd also be confidently talking about the wing shape I expect.
It spent a long time flying low and slow over Butterfly World near St Albans, giving me ample opportunity to snap away, albeit with only a 18-200mm lens at the long end (the photo is fairly severely cropped and not as sharp as I'd like). I wish I'd had my 400mm lens that day!