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The Ryukyu Wood Pigeon (Columba jouyi), otherwise known as the Silver-banded or Silver-crescented Pigeon is an extinct species of bird in the Columba genus in the Columbidae family. This Wood Pigeon was endemic to the Laurel forest habitat.
It is an extinct species of pigeon that was endemic to islands in the Okinawa archipelago south-west of the Japanese mainland. In the Okinawa group, it has been recorded from Iheyajima, Izenajima, Okinawa proper and the nearby islet Yagachijima. In the Kerama Retto to the west of Okinawa, it was found on Zamamijima, whereas in the Dait group, some 300 km to the SE of Okinawa, it occurred on both major islets, Kita Daitjima and Minami Daitjima. In earlier times, it was most likely also found on other islands near Okinawa, such as Iejima. The species' scientific name honors Stejneger's friend, the specimen collector Pierre Louis Jouy.
Like all species of Japanese wood-pigeons, the Ryukyu Wood Pigeon was very susceptible to habitat destruction. It required substantial areas of undisturbed subtropical forest to thrive. Iejima, for example, was largely deforested for settlement and agriculture even before scientific exploration began, which explains the absence of records from this island. The species was last recorded on Okinawa in 1904, probably succumbing to hunting. In the Dait group, it disappeared after 1936 due to these small islands being completely deforested by settlement and construction activity prior to World War II. It was presumed to continue to exist on the outlying islands in the Okinawa group, but has never been found again. Theoretically, there is sufficient habitat remaining in the mountains of Okinawa. Still, the military activity in World War II and hunting by the Japanese garrison would probably have yielded sightings, if birds still had existed there. More puzzling is the absence of any records from Tokashikijima in the Kerama Retto, which, despite being small, has still mostly intact forest cover even today; Zamamijima, where the species is known to have occurred is smaller still and situated farther away from the Okinawan mainland.