[almostnormal]

there's quite a lot of evidence for that aswell. large birds on migration, for example pink feet and bewicks, can't manouvre quickly enough to avoid large farms, and birds of prey have been seen to hit them, probably at dusk and dawn. that's one of the main concerns i have when i look at these massive developments. its also why i think they need to do detailed EIA's and study bird movements (and other wildlife movements) at a site over a period of time (say 3-5years) before they build them.