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The most common species are house sparrows and European starlings. An owl sits on display at an exotic bird cafe in Tokyo, Japan The study worked combined data on 9,700 known bird species Around 50 billion birds live on Earth, meaning that there are around six times as many birds as humans on the planet, according to a study by Australian scientists. The research, published in the journal Proceedings of the US National Academy of Sciences, worked with data on 9,700 known bird species from around the world, which they said represented 92% of all extant species. Watch video 04:26 Share Migratory birds in decline around Burkina Faso Send Facebook Twitter reddit EMail Facebook Messenger Web Whatsapp Web Telegram linkedin Permalink https://p.dw.com/p/3otNA Migratory birds in decline around Burkina Faso "Quantifying abundance, however, is difficult and time consuming," the study said. The researchers combined scientific surveys of individual species across specific distribution areas, with almost a billion entries posted in the online ornithological database eBird. "We conclude that there are many rare species, highlighting the need to continue to refine global population estimates for all taxa and the role that global citizen science data can play in this effort," the team, led by William Cornwell from the University of New South Wales in Sydney, said. "There are many rare species and comparatively few common species," they said. "By aggregating the species-level estimates, we find that there are ~50 billion individual birds in the world at present." Watch video 02:16 Share 'Selfless' parrots Send Facebook Twitter reddit EMail Facebook Messenger Web Whatsapp Web Telegram linkedin Permalink https://p.dw.com/p/3dJQr 'Selfless' parrots Which birds are most common? Among the top most abundant birds in the world are the house sparrow (1.6 billion), the European starling (1.3 billion), the ring-billed gull (1.2 billion) and the barn swallow (1.1 billion). Meanwhile, the most abundant orders of birds were perching birds (28 billion), shorebirds (9.7 billion), and birds commonly found along shorelines and mudflats, or waterfowl (2.3 billion). The study found that the least-abundant types of birds in the world were flightless kiwis from New Zealand (3,000) and mesites (154,000), scrubland birds typically found in Madagascar. Watch video 04:33 Share Spectacular photos of flocks of birds Send Facebook Twitter reddit EMail Facebook Messenger Web Whatsapp Web Telegram linkedin Permalink https://p.dw.com/p/3qYOT Spectacular photos of flocks of birds Researchers found that the majority of the birds are from the palearctic and nearctic biogeographic realms, which together include most of North America, Asia and Europe. "Quantifying the abundance of species is essential to ecology, evolution, and conservation," the researchers said. "Yet the empirical pattern at the global scale remains unresolved, with a few species' abundance well known but most poorly characterized." * Date 18.05.2021 * Related Subjects Biodiversity, Sci-Tech, Birds, Earth * Keywords Earth, Science, birds, biodiversity * Send us your feedback. * Print Print this page * Permalink https://p.dw.com/p/3tX8h Advertisement Facebook Offizielles Logo DW News on Facebook 11.07.2017 Twitter Offizielles Logo Follow @dwnews on Twitter 11.07.2017 * TOP STORIES * Germany * Coronavirus * World * Business * Science * Environment * Culture * Sports * * A - Z Index * MEDIA CENTER * Live TV * All media content * Latest Programs * Podcasts * TV * Schedule and Reception * TV Programs * * RADIO * LEARN GERMAN * German Courses * German XXL * Community D * Teaching German * ABOUT DW * Who we are * Press * GMF * Business & Sales * Advertising * Travel * SERVICE * Reception * Apps & Co. * Newsletters & Co. * FAQ * Contact * * DW AKADEMIE * About us * Media Development * Master's Degree * Traineeship * Training (c) 2021 Deutsche Welle | Privacy Policy | Legal notice | Contact | Mobile version