According to Information Online, there are a few facts in zoology that we believe are not true. One of the worst cases is that the knees of the birds are facing backwards.
Of course, there seems to be a joint where you’d expect to see the knee and it seems to bend in the opposite direction. However, what you’re actually seeing is the ankle joint, which is at the very top of the foot.
The femurs of birds are relatively short, and the knees are actually set right next to the body, sandwiched between the wings and feathers.
What are the knees?
Kneecaps are sesame bones; It means that they grow inside a tendon; Presumably to protect the ligaments from general wear and tear.
What are sometimes mistaken for the normal lower leg bones (tibia and fibula) are the tarsometatarsus; A single joint of the ankle and foot bones found only in birds and some dinosaurs.
Birds really rely on their toes; It means that they walk on the ground only with their toes. The rest of the leg extends casually upwards, giving the impression that their knees are bent backwards.
The flightless ostrich is the only animal with twice the normal number of patellae.
