11003-97009 Tuatara (Sphenodon punctatus) on Stephens Island, often 'share' burrows with fairy prion, although the relationship is distinctly one-sided. Stephens Island tuatara contribute to around a 28% failure of all prion eggs laid, either through direct predation, through interference by causing desertion or the exclusion of breeding parents from the nesting chamber, or by the direct predation of chicks. Stephens Island *
