Question: Hoopoe Starlings are found on an island located in what ocean?

Context paragraphs:
Enders Island: Enders Island is an 11-acre island located off the coast of Mystic, Connecticut near the town of Stonington.  The island located in the Fisher's Island Sound at the base of the Mystic River and is connected to neighboring Mason's Island by a causeway.  Mason's Island is connected to the mainland by another causeway.  Its sole inhabitants operate a retreat center and art school owned by the Catholic Society of Saint Edmund.  Enders Island is also home to the bi-annual residency portion of Fairfield University's Master of Fine Arts in Creative Writing Program.  The Island is available to the public, with a chapel, surrounding views of the Atlantic, walking paths with flower gardens and a gift store.

Royllo: Royllo (also Roillo), is a legendary phantom island that was once thought to be located in the Atlantic Ocean.  Probably identical with the island originally called Ymana in a 1424 nautical chart of Zuane Pizzigano.  The island is usually depicted in many 15th-century maps as a small island located slightly to the west (20 leagues or so) of the much larger Antillia island.  It is often found in the group "insulae de novo repertae", or "newly discovered islands" along with other legendary islands.

Mocha Island: Mocha (Spanish: "Isla Mocha" ) is a small Chilean island located west of the coast of Arauco Province in the Pacific Ocean.  The island is approximately 48 km2 in area, with a small chain of mountains running roughly in north-south direction.  In Mapuche mythology, the souls of dead people travel west to visit this island.  The island today is home to the Mocha Island National Reserve, a nature reserve that covers approximately 45% of the island's surface.  The island is noted as the location of numerous historic shipwrecks.  The waters off the island are a popular place for recreational sea fishing.

Hoopoe starling: The hoopoe starling, also known as the Réunion starling or Bourbon crested starling ("Fregilupus varius"), is a species of starling which lived on the Mascarene island of Réunion, and became extinct in the 1850s.  Its closest relatives were the Rodrigues starling and the Mauritius starling from nearby islands, and the three apparently originated in Southeast Asia.  The bird was first mentioned during the 17th century and was long thought to be related to the hoopoe, from which its name is derived.  Although a number of affinities have been proposed, it was confirmed as a starling in a DNA study.

Pohnpei starling: The Pohnpei starling ("Aplonis pelzelni"), also known as Pohnpei mountain starling or Ponape mountain starling, is an extremely rare or possibly extinct bird from the family of starlings (Sturnidae).  It is (or was) endemic to the island of Pohnpei (Federated States of Micronesia) in the Pacific Ocean.  It was called "sie" ("pronounced see-ah") by the Pohnpei islanders.  It was named after the Austrian ornithologist August von Pelzeln (1825–1891).

Hoopoe-billed ʻakialoa: The hoopoe-billed ʻakialoa, ("Akialoa upupirostris"), was an extinct species of Hawaiian honeycreeper.  Fossil remains have been found of this species in the Hawaiian islands of Kauai and Oahu.  The species specific name, "upupirostris", is derived from the Latin "upupa", hoopoe, and "rostrum", bill, and refers to the long sickle-shaped bill which resembles that of the hoopoe.  The species was apparently slightly larger than others in its genus.  A similar but smaller bird has been discovered but is as yet undescribed from the island of Maui.  The species presumably became extinct after the arrival of humans in Hawaii, and is known only from the fossil record.

Wrangel Island: Wrangel Island (Russian: о́стров Вра́нгеля , "ostrov Vrangelya"; ] ) is an island in the Arctic Ocean, between the Chukchi Sea and East Siberian Sea.  Wrangel Island lies astride the 180° meridian.  The International Date Line is displaced eastwards at this latitude to avoid the island as well as the Chukchi Peninsula on the Russian mainland.  The closest land to Wrangel Island is the tiny and rocky Herald Island located 60 km to the east.  The distance to the closest point on the mainland is 140 km .  Wrangel Island may have been the last place on earth where mammoths survived.

Rodrigues starling: The Rodrigues starling ("Necropsar rodericanus") is an extinct species of starling that was endemic to the Mascarene island of Rodrigues.  Its closest relatives were the Mauritius starling and the hoopoe starling from nearby islands; all three appear to be of Southeast Asian origin.  The bird was only reported by French sailor Julien Tafforet, who was marooned on the island from 1725 to 1726.  Tafforet observed it on the offshore islet of Île Gombrani.  Subfossil remains found on the mainland were described in 1879, and were suggested to belong to the bird mentioned by Tafforet.  There was much confusion about the bird and its taxonomic relations throughout the 20th century.

Pele Island: Pélé Island, sometimes spelled Pele in English, is a volcanic island located 11,2 miles north of the island of Éfaté in the Shefa Province of the Republic of Vanuatu.  It has a total area of 1.7 square miles, Pélé is inhabited by about 200-220 Ni-Vanuatu villagers residing in the four villages: Worsiviu, Worearu, Piliura, and Launamoa.  Pélé Island is a part of the MPA Nguna-Pele Marine Protected Area, which was established in 2003, and is a popular Vanuatuan diving location.  The Nguna-Pele Marine Protected Area covers a total area of 11.5 sq. mi., including numerous reefs, sea grass beds, mangrove forests and intertidal lagoons.  The Nguna-Pele Marine Protection Agency is located in the village of Piliura, and mounts an exhibition and sells T-shirts.  Income from tourism is distributed by the Village Tourism Committee and supports aims as village water supply projects.  The island can be visited daily by boat from the Paonangisu area by the town of Emua on Éfaté's north coast.  There are also yachts available both from Emua and Nguna for day and overnight charters to the island.  The island is nearly adjacent to the island of Nguna, with a small passage no deeper than 33 yards separating the two.  It has a tropical climate and has a maximum elevation of 650 feet at its highest.  Much of the island is extremely steep and rocks prevent you from walking along the coastline around the island.  White sandy beaches are found in Piliura, Worearu, Laonamoa, and Sake.  Overpopulation has led to a steady migration from Pele villages to southern Nguna in recent times.

Réunion: Réunion (French: "La Réunion" , ] ; previously "Île Bourbon") is an island and region of France in the Indian Ocean, east of Madagascar and 175 km southwest of Mauritius.  s of 2016 , it had a population of 850,996.  It is the most prosperous island in the Indian Ocean, having the highest GDP per capita in the region.

Supporting paragraphs: Hoopoe starling Réunion
Answer: the Indian Ocean