Checked on 2024-09-27
Probability: 0.8
Justification: The claim is supported by the evidence from the International Union for Conservation of Nature (IUCN) and BirdLife International, which are credible sources in the field of conservation and biodiversity. However, the exact number of bird species might vary slightly due to ongoing research and classification debates, hence the probability score is not 1.
Final Truth Score: 0.86
Established in 1964, The International Union for Conservation of Nature’s Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. The IUCN Red List is a critical indicator of the health of the world’s biodiversity. Far more than a list of species and their status, it is a ...
STATE. BirdLife International is the official Red List Authority for birds, responsible for assessing and documenting the global extinction risk of all 11,000+ species for the IUCN Red List. Following transparent expert discussions on BirdLife’s Globally Threatened Bird Forums, the 2021 Red List update saw 34 species being uplisted to higher ...
This fifth edition of BirdLife’s flagship State of the World’s Birds report summarises what birds, as barometers for planetary health, can tell us about the state of nature, the pressures upon it, and the solutions in place and needed. The data paint a deeply concerning picture – nearly half of all bird species are in decline, with more than one in eight at risk of extinction.
Step 3 (Life history traits): Collate life history traits (bird color, flock size, body size, and International Union for Conservation of Nature [IUCN] status) that are likely to influence the relationship between the true population of a species and the relative abundance of a species calculated through eBird. •
There are thousands of species of birds living on Earth today–anywhere from around 10,000 to as many as 18,000, depending on how you define “species.”. The fossil record suggests that almost ...