Studies done on parrots that use their feet to pick up food have found that over 70% of the birds favor using their left foot. Several different types of parrots participated in tests designed to study their cerebral lateralization, meaning how strongly each bird processes information using either hemisphere of the brain.
One test had the birds pick seeds out of a background of similar sized pebbles. Another more difficult test had the birds use their feet to remove a treat from a dangling string. Three-quarters of the birds showed a definite left-footed tendency.
What about the birds in our backyards? Do you notice more birds holding a seed down with their left foot to crack it open? How about left-wingedness? Watch the soaring birds above. Have you noticed their preference to fly in counter-clockwise circles?
- Cerebral lateralization determines hand preferences in Australian parrots: http://rsbl.royalsocietypublishing.org/content/7/4/496
- Left-handedness in Parrots: http://elibrary.unm.edu/sora/Auk/v055n03/p0478-p0480.pdf
Can All Birds Learn to Talk Like Humans? http://bit.ly/s0rflH
Do Birds Have Thumbs? http://bit.ly/tFuQYn
How birds chew food without teeth http://goo.gl/5SbuV
Has a bird ever "flipped you the bird": A recent study reveals ravens have their own specific gestures http://goo.gl/r0GWk