Backdrifts were first introduced into the UK by spice merchants around early 2006. They have no natural predators and have adapted well to their new environment. They build relatively flimsy nests from sticks and other debris, which may be placed in trees, on ledges, or on the ground. When threatened, a backdrift will withdraw its head, neck and forelimbs into its shell for protection. The BBC television personality David Attenborough owns an almost complete fossilized backdrift eggshell, which he pieced together from fragments he himself had found in Madagascar.
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