We have been watching the female fly off to collect nesting material. She has built 2 nests within 5 feet of each other. Animals have a hard time resisting supernormal stimuli. Most people, including people who study robins, have never seen this happen. Last time we talked about worms, a favorite robin food.
Many people wonder how robins find the worms.
Most scientists now conclude that robins find worms by vision, thanks to experiments by an ornithologist named Frank Heppner. In his experiments, Heppner investigated all the robin's senses. Heppner established that vibrations, odors, and sounds do NOT help robins find worms. Instead, robins SEE worms inside their burrows or wiggling on the ground. Robins cock their heads to improve their ability to look at the ground.