Nearly 70% of bird species studied in a tropical forest since 1977 are declining, some have lost more than half of their population. The researchers ignore the cause.
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Oquelled Fourmatilier, Phaenostic McLeannani, is one of the hosts of the Tropical Forest of Soberrania National Park, Panama. As 70% of bird species that attend it, its population is declining – some lost more than half of their workforce in forty years. Only a hummingbird and a macarous have seen their number of individuals increase. This dark observation is drawn up In the NPCs From April 4th by a team from the University of Illinois who since 1977 has been conducting bird fauna counts every six months. The decline has all the more surprised researchers that the 22,000 hectares of the park are in principle remained preserved for more than fifty years. The study does not identify the reasons for this drop in the population, or extrapolate it to the entire rainforest, but scientists are wondering about the impact of warming. They are worried about the imbalances induced by this loss of biodiversity: the birds, which disperse the seeds, pollinate and consume the insects, are a key component of the rainforest.