Fun fact: all cockies are left-handed. I used to live in Canberra, where they're plentiful. I heard this 'fact' and was doubtful. Well, I've since seen hundreds of these birds eating acorns and, can confirm, every one a leftie.
This is the first time I've heard something like this I had no idea animals could be left handed too! We used to have two budgies at home, but I never paid attention to which foot they preferred. Now I'm honestly tempted to go watch a bunch of parrot videos just to see if this leftie thing shows up elsewhere too.
It's called the Coriolis effect.