 Eggs and chicks are vulnerable to predation by introduced mammals (rats, mostly Rattus rattus) and native birds (Pearly-eyed Thrashers, Margarops fuscatus).Pearly-eyed Thrashers are opportunistic omnivores, and occasionally pursue adult or immature orioles, but it is unlikely that such attempts are successful.All birds of prey that regularly occur on Montserrat are mostly associated with open habitats, and are therefore unlikely predators of Montserrat Orioles.