I have watched crows walk along the side of a wooden shingled building, peering up under the shingles ledge, and picking of the insect/spider egg cases that are attached there, they are very methodical, and do one continious row at a time.
They also work the edge of the hyway, picking off insects injured and dazed by the traffic.While there is no direct conection to geometry with working beside the hyway, the crows do have to know that there are big insects present in large numbers, when there is also traffic(morning afternonn rush) , which wind and rain would disrupt,so still very much of a cognitive exercise