Lawrencium is a actinide metal (technically) and it sits on the very edge of the “island of stability” and thus is one of the few elements past 100 that have had chemical experiments performed with it. Though it is still radioactive and these experiments revel more about how the elements behave overall than Lawrencium itself. It’s tied with electric eel as electric eels also tend to like to sit on the edge of islands.
Ruthfordium is a transition metal, though this doesn’t make it stable. It’s also has very long history of naming called the transfermium wars.
The kakapo or night parrot is a strange nocturnal parrot native to New Zealand. Their are not many left and it is critically endangered. It’s tied to Rutherfordium as I felt like it.