I see wonderful things

This is a half-sider budgerigar, it has completely different colours on each side of its body,

This is a rare example of a tetragametic chimera, when two embryos merge during a very early stage of development

creating a harmonious merger of two budgerigars into a single,… pic.twitter.com/s06FX8zT1B

— Science girl (@gunsnrosesgirl3) September 26, 2023