Could anybody give any advice on a suitable lens for Bird photography? It would be mounted to a D200 body and price would be an issue. Meaning i cant afford the nikon 400mm 2.8, the 500mm f4 or the 600mm F4. I was thinking about nikon 300mm f4 with a tele converter possibly or i have looked at the 80-400 VR. Maybe the Sigma 50- 500mm but quality may be an issue with the sigma lenses, i personaly dont have a problem with sigma optics but i have not used any of their tele lenses. I think a buget of around a £1,000 to £1,500 would be the most i would spend.