Grouse and wild turkeys often come to the road shoulder to pick gravel for their crop to aid digestion. Geese or ducks that nest in a road-bordering marsh, grassy field or ditch may wander onto the road surface. But regardless of our cost in dollars and cents, a collision is almost always costly to the wild victim. ADVERTISEMENTBecause of the locations where they nest, in or on the edges of woodlands, the main factor in wild turkey nest destruction is predators. Pheasants and numerous varieties of ducks nest in uplands adjacent to ponds and wetlands, including hay and fallow, grass-grown fields.