Analysis of information sources in references of the Wikipedia article "Lobos de Tierra" in English language version.
An 1863 survey of the islands north of Lima identified 6.8 million metric tons of phosphatic guano on Isla Lobos de Tierra alone. All of those proved to be gross overestimates.
The subantarctic Dominican or Kelp Gull (Larus dominicanus) is an even more remarkable invader, for it finds centres of maximum abundance, as a nesting bird, at localities so utterly unlike as the Strait of Magellan and Lobos de Tierra Island.
The Blue-footed Booby has a relatively wide breeding range -- from the Gulf of California, the Gulf of Panama (population ca 100 pairs, pers. obs.), the Galápagos, and southward to its overlap with the Peruvian Booby on Isla Lobos de Tierra, Peru.
