What characteristic of the giant wētā makes reintroduction into former predator-filled habitats exceptionally difficult?

Answer

Slow reproductive rates and sluggish movements

Their slow reproduction, sluggish movements, and lack of flight mean they have no effective defense mechanisms against agile mammalian hunters, making reintroduction without constant intervention nearly impossible.

What characteristic of the giant wētā makes reintroduction into former predator-filled habitats exceptionally difficult?
biologysizeinsectgiantWeta