According to a recent study, pesticides and herbicides are the biggest contributors to the decline of bird populations. A team of researchers from the University of California, Davis, looked at data from more than 600 bird species in the United States and Canada and concluded that the use of these chemicals is one of the key reasons why bird populations are in decline. The researchers found that birds that were exposed to higher levels of pesticides and herbicides had lower reproductive success, with fewer eggs and smaller clutches of eggs. The study also highlighted the need for a stronger emphasis on sustainable agroecosystems and integrated pest management. This could help to reduce the use of these chemicals and ultimately lead to healthier bird populations.

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source: Phys.org