Why Do Birds Bob Their Head While Running? (Locomotion, part 2)

The question : ‘Why do some*(see note below) birds bob their heads when walking?’ has perplexed scientists for many years. Some researchers suggest that head-bobbing may be correlated with the morphology of the retina, but others propose that it’s mechanically linked to the locomotor system, and that its visual functions are secondarily adapted. Either way, […]