In the past, introduced animals have impacted the habitat of Santa Fe Island, which in turn may have affected the Barrington land iguana. Feral goats were once found on the island (7), wiping out large areas of vegetation which the iguanas depend on for food (4), but thankfully, the Galápagos National Park Service eliminated the goats from Santa Fe in 1971 (7). It has been suggested that predation by Galápagos hawks and native rats (Oryzomis species) have impacted numbers of the Barrington land iguana, but the observations of other scientists suggest that this is not the case. The native rats have never been seen trying to dig down to the buried iguana eggs, and whilst Galápagos hawks do prey on young land iguanas, this natural process is not likely to pose a significant threat (7) Currently, the primary threat to the Barrington land iguana is the forever present possibility of feral animals being introduced to the island. The devastating effect this could have has been shown by the presence of feral dogs on Santa Cruz Island, which virtually destroyed all populations of the other Galápagos land iguana, Conolophus subcristatus (7).
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