query: How large is Comoros?
passage: Comoros
At 1,660km2 (640sqmi), excluding the contested island of Mayotte, the Comoros is the fourth-smallest African nation by area. The population, excluding Mayotte, is estimated at 832,322.[4][5] As a nation formed at a crossroads of different civilisations, the archipelago is noted for its diverse culture and history. The archipelago was first inhabited by Bantu speakers who came from East Africa, supplemented by Arab and Austronesian immigration.
passage: Comoros blue pigeon
As of 2017, the Comoros blue pigeon has been rated as a species of near threatened on the IUCN Red List of Endangered Species. This is because although it has a restricted distribution, its range size is considered to be more than 20,000 km (7,700 mi). Despite a decreasing or fluctuating range, the area of occurrence is above the criterion to warrant it a vulnerable rating. Although its population has not been determined, it is thought to be above 10,000. Also, even though its population is decreasing, the rate of decline is thought to be less than 30% over ten years or three generations and thus is below the vulnerable criteria. It is reportedly extinct in some areas, commonly found in others, and extinct on many small islands.