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The average size of global wildlife populations have declined by 73% in 50 years, a new study by the World Wildlife Fund has found.. The study, titled the 2024 Living Planet Report, monitored ...
Story at a glance A new report from BirdLife International details the current state of bird populations around the world. Expansion of the agricultural industry, along with chemicals and ...
Bird extinction is the complete elimination of all species members under the taxonomic class, Aves. Out of all known bird species, (approximately 11,154), 159 (1.4%) have become extinct, with 226 (2%) being critically endangered. [1]
"That means in just my lifetime, 50 years, we've seen a decline of 73% in the average size of these wildlife populations," noted Dr. Robin Freeman, global biodiversity expert with the Zoological ...
Birds are also threatened by high rise buildings, communications towers, and other human-related activities and structures; estimates vary from about 3.5 to 975 million birds a year in the North America alone. [18] The largest source of human-related bird death is due to glass windows, which kill 100–900 million birds a year.
Many bird populations are declining worldwide, with 1,227 species listed as threatened by BirdLife International and the IUCN in 2009. [336] [337] There have been long-term declines in North American bird populations, with an estimated loss of 2.9 billion breeding adults, about 30% of the total, since 1970. [338] [339]
The passenger pigeon was once among the most abundant wild bird species in the world, with a single flock numbering up to 2.2 billion birds. It was hunted close to extinction for food and sport in the late 19th century. The last individual, a mateless female named Martha after Martha Washington, died in the Cincinnati Zoo in 1914.
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