News Headline
Study finds parrots use their heads as a 'third limb'
Source
Phys.org
Publication Date
2022-05-19
No vertebrate (fish, mammal, bird, reptile, or amphibian) has ever had an odd number of limbs. Despite this "forbidden phenotype," some animals seem to use other body parts as a third or fifth "limb" to move from one place to another.