Over 600 approaches and departures from Tegucigalpa Honduras never turned the radar on with thousands of turkey buzzards in the valley. We always visually avoided them with no problem. Radar does nothing. Visually you can avoid them if you look far enough ahead. If you see them at the last few seconds you probably can't avoid them. We had no problem just looking out the window and maneuvering around them when they were dots, not right in front of you. It worked fine for us but I know some pilots will say you can not avoid a bird strike. You have to look way ahead of your flight path and it is quite easy.