altrici fu'ivla

x1 is altricial, requires nourishment, a baby, infant

organism soon after hatching or being born at such stage of development when it is incapable of moving around on its own. See also prekoci, verba, makcu

In notes:

x1 is an organism x2 at its larva stage of development
x1 is precocial, young live being soon after birth that doesn't require special care due to being relatively mature