🦜 NEW: Behavioral biologist Jorg Massen gave 17 Galah #Cockatoos a daily choice to fly free. The #birds almost always flew, then foraged and raised their crests more. They also showed greater #optimism about finding #walnuts after #flying. Massen sees #flight as an ethological need, tying the #research to #animal welfare that enables their natural behaviors. 👉 https://www.scientificamerican.com/article/do-birds-enjoy-flying-scientists-asked-cockatoos/ #parrots #animals #behavior #animalwelfare #ornithology #nature #science #emotions #biodiversity #zoology #biology #galah