Longevity list Euring. Viitattu 28.11.2024. (englanniksi)
iucnredlist.org
BirdLife International: Larus canusIUCN Red List of Threatened Species. Version 2013.2. 2012. International Union for Conservation of Nature, IUCN, Iucnredlist.org. Viitattu 30.5.2014. (englanniksi)
Mew Gull, Larus canusThe IUCN Red List of Threatened Species. Version 2023-1. 2017. International Union for Conservation of Nature and Natural Resources. ”The global population is estimated to number c.2,500,000 – 3,700,000 individuals (Wetlands International 2015).” Viitattu 30.1.2024. (englanniksi)
Mew Gull, Larus canusThe IUCN Red List of Threatened Species. Version 2023-1. 2017. International Union for Conservation of Nature and Natural Resources. ”The European population is estimated at 964,000-1,300,000 pairs, which equates to 1,920,000-2,600,000 mature individuals. The population in the EU28 is estimated at 221,000-318,000 pairs, which equates to 442,000-636,000 mature individuals.” Viitattu 30.1.2024. (englanniksi)
Larus canus (Mew Gull) (pdf) The IUCN Red List of Threatened Species. Supplementary information. International Union for Conservation of Nature and Natural Resources & BirdLife International. Viitattu 11.6.2024. (englanniksi)