Most cells are a very small size because they don’t have hard shells like eggs their volume does not increase their surface area–to-volume ratio is too small their volume is limited by how large their surface area is

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.