By: Lindsay Craig
Blakiston’s Fish-owl, scientifically known as Bubo blakistoni, is one of the largest owl species in the world with an average wingspan of 6.5 feet. These owls are found in riparian forests in eastern Russia, eastern inner Mongolia, China, and northern Japan. Riparian forests are a forest buffer juxtaposed to wetlands, lakes, or streams. Eagle-owls create nests on large, open top cavities in mature trees. Other common names of this owl include Blakiston’s Fish-owl, pertaining to their close relation to other fish owl species. Logging, conversion of forest to farmland, dam construction, overharvesting of especially salmon species have attributed to a significant decrease in population. These owls are classified as endangered as of 1994 and as a Category I species by the Red List (The IUCN Red List of Threatened Species). Their numbers are decreasing as we speak with a wild population of only 1,000-2,499. This species was listed as critically endangered with as few as 60 breeding pairs in the wild (Nakamura, 2018). The Fish-Owl was close to extinction from the late 80s to mid 90s. Blakiston’s Fish-owls should be actively protected because they act as an umbrella species, which means that through their protection, other species within the ecosystem also are protected (Nakamura, 2018). Fish-Owls play an integral role in the food chain due to their diet in heavy in local fish species, including the invasive rainbow trout, sculpin, and other salmonoid species (Nakamura, 2018 Figure 3.17).
References:
Oien, E. (n.d.). Bubo blakistoni (Blakiston's eagle-owl). Animal Diversity Web. Retrieved October 7, 2022, from https://animaldiversity.org/accounts/Bubo_blakistoni/
Riparian Forest Buffers. Riparian forest buffers. (n.d.). Retrieved October 7, 2022, from https://www.fs.usda.gov/nac/practices/riparian-forest-buffers.php
International), B. L. I. (B. L. (2016, October 1). The IUCN Red List of Threatened Species. IUCN Red List of Threatened Species. Retrieved October 7, 2022, from https://www.iucnredlist.org/species/22689007/93214159#assessment-information
Slaght, J. C. (n.d.). Blakiston's fish owl. Scientific American. photograph. Retrieved from https://www.scientificamerican.com/article/a-duet-of-fish-owls/.
Nakamura, F. (2018). Biodiversity conservation using umbrella species: Blakiston's fish owl and the red-crowned crane. Springer Singapore.