He based it on the description of la Perruche à large queue, "the long-tailed parrot" by French naturalist François Levaillant in his 1805 work Histoire Naturelle des Perroquets.
He derived it from the description of la Perruche à large queue, "the long-tailed parrot," provided by French naturalist François Levaillant in his 1805 work Ornithologie.