Atlantic canary serin, and the two can produce on average 25% fertile hybrids if crossed. The phylogeny has been obtained by Antonio Arnaiz-Villena et al. The bird is named after the Canary Islands, not the other way around. The islands' name is derived from the Latin name "canariae insulae" ("islands of dogs") used by Arnobius, referring to the large dogs kept by the inhabitants of the islands. A legend of the islands, however, states that it was the conquistadors who named the islands after a fierce tribe inhabiting the largest island of the group, known as the 'Canarii'. The colour canary yellow
Canary Islands beaches in Fuerteventura, adding credibility to the theory. Marine mammals include the large varieties of cetaceans including rare and not well-known species (see more details in the "Marine life of the Canary Islands"). Hooded seals have also been known to be vagrant in the Canary Islands every now and then. The Canary Islands were also formerly home to a population of the rarest pinniped in the world, the Mediterranean monk seal. Some holidays of those celebrated in the Canary Islands are international and national, others are regional holidays and others are of insular character. The official day of the autonomous