El cap dels ocells!
Per fi! No us podeu imaginar la quantitat de vegades que m’havia demanat la raó del divertit moviment del cap dels ocells. Sembla poc pràctic i cada vegada que ho he intentat imitar m’he fet mal a les cervicals.
Aquí hi trobareu la resposta.
Pronounced head-bobbing behavior during walking is a characteristic of diverse species of birds, but how this behavior benefits the birds and under what circumstances it proves useful have remained uncertain. Researchers this week report findings that strongly suggest that for some birds head bobbing is critical for the stabilization of their visual world, despite the motion of their bodies, and thereby enables the accurate detection of objects such as food items.
