natal

Steelheads migrate to the ocean and return to their natal streams to spawn, while rainbows spend their lives in freshwater.

Scripture and natal charts existed in tandem, along with palm-reading diagrams, recipes for potions and instructions for alchemical reactions.

Steelhead migrate to the ocean and return to natal freshwater streams to spawn, a cycle that can be impeded by dams and other man-made barriers.

Silvery steelhead migrate to the ocean and return to natal freshwater streams to spawn, a cycle that can be impeded by dams and concrete channels.

Testosterone levels must be "within natal female range... for an appropriate length of time so as to minimise any potential advantage", and hormone treatment must be verified annually.