When is local the best paradigm? Breeding history influences conservation reintroduction survival and population trajectories in times of extreme climate events

► Restrictions to single local sources for reintroductions are accepted policy. ► Experimental single and mixed-source reintroductions call for review of this policy. ► Mixed source reintroductions had greatest survival and resilience to extreme climate. ► Only far outcrossed reintroductions had low extinction risk and sustainable growth. ► Recipient sites most proximal to maternal origin were not necessarily ideal.