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Arndt Sven-Erik/Arterra Picture Library/Alamy Earth is home to around 50 billion wild birds according to a new global estimate, but most species are very rare and only a handful number in the billions. Just four undomesticated species are in the club of those with a billion-plus individuals, with house sparrows ( Passer domesticus) the most abundant, followed by European starlings ( Sturnus vulgaris), ring-billed gulls ( Hirundo rustica). By contrast, 1180 species number fewer than 5000 birds each. Advertisement “One of the takeaways is mother nature just loves rare species. It’s what some refer to as hyper dominance, which has been found in Amazonia tree flora and other plant groups. It’s not terribly surprising, but it’s good to have the data,” says Corey Callaghan at the University of New South Wales, Australia, who led the research.

Nusa tenggara timurAdam vaughanCorey callaghanRoyal society for the protection of birdsArndt sven erik arterra picture library alamyUniversity of new south walesNew south walesRichard gregoryUnited kingdomRoyal societyநுசா தெங்க்கர டைமூர்பண்படாமனித இயல்பு வாகன்கோரி காலகன்அரச சமூகம் க்கு தி ப்ரொடெக்ஶந் ஆஃப் பறவைகள்பல்கலைக்கழகம் ஆஃப் புதியது தெற்கு வேல்ஸ்புதியது தெற்கு வேல்ஸ்