Landmark-based spatial memory in birds (Parus atricapillus and Columba livia): The use of edges and distances to represent spatial positions.

摘要: Birds' use of landmarks to identify spatial locations was examined. Black-capped chickadees (Parus atricapillus) and pigeons (Columba livia) searched for hidden food on a 120-cm 2 tray. In each task the target near an edge with nearby landmark. On occasional unrewarded tests landmark either left in its usual position, shifted parallel edge, perpendicular or diagonally. diagonal shifts birds their searching more direction than perpendicular, which violates predictions vector sum model (Cheng, 1989)