Microplastics found in lungs of over 50 bird species

A new study has found that microplastics are accumulating in the lungs of various bird species. Researchers examined the lungs of birds from 51 different species that were killed to reduce the risk of bird strikes at Chengdu Tianfu International Airport in China. All the birds tested had microplastics in their lungs. Professor Yongjie Wu, who led the study, explained that birds are sensitive indicators of environmental health. They can help researchers understand airborne pollutants due to their mobility and unique respiratory systems. The research team discovered an average of 416 microplastic particles per gram of lung tissue in the birds. The study showed that terrestrial birds had higher levels of microplastics than aquatic birds. Larger birds also had more microplastics compared to smaller ones. Carnivorous and omnivorous birds had the highest amounts of microplastics, suggesting that their feeding habits and habitats play a role in their exposure. The researchers identified 32 different types of plastics in the birds, including materials commonly used in manufacturing. This raises concerns about sources of microplastics, such as tyre wear from vehicles. Although often overlooked, tyre wear is believed to contribute significantly to microplastic pollution. Shane DuBay, a member of the research team, noted the broad presence of microplastics in the sampled birds, highlighting a global issue akin to plastic pollution in oceans. Previous studies have also found microplastics in the air in various locations worldwide. Dr. Stephanie Wright, who has studied air samples, emphasized the importance of addressing microplastics at their source. She warned that these materials can accumulate in both animal and human bodies, posing health risks.