Talk:Bird

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Section sizes Section size for Bird (48 sections) Section name Byte count Section total (Top) 8,435 8,435 Evolution and classification 1,720 61,034 Definition 8,579 8,579 Dinosaurs and the origin of birds 8,367 8,367 Early evolution 7,224 7,224 Early diversity of bird ancestors 7,252 7,252 Diversification of modern birds 6,533 6,533 Classification of bird orders 14,587 14,587 Genomics 6,772 6,772 Distribution 4,952 4,952 Anatomy and physiology 647 44,806 Skeletal system 2,580 2,580 Excretory system 4,359 4,359 Reproductive system 8,891 8,891 Respiratory and circulatory systems 2,590 7,012 Heart type and features 2,276 2,276 Organisation 2,146 2,146 Nervous system 7,375 7,375 Defence and intraspecific combat 2,642 2,642 Feathers, plumage, and scales 8,775 8,775 Flight 2,525 2,525 Behaviour 851 77,205 Diet and feeding 9,448 9,448 Water and drinking 3,519 3,519 Feather care 2,149 2,149 Migration 10,630 10,630 Communication 6,421 6,421 Flocking and other associations 4,087 4,087 Resting and roosting 7,254 7,254 Breeding 137 32,846 Social systems 8,693 8,693 Territories, nesting and incubation 6,850 6,850 Parental care and fledging 7,310 7,310 Brood parasites 2,204 2,204 Sexual selection 2,065 2,065 Inbreeding depression 1,543 1,543 Inbreeding avoidance 4,044 4,044 Ecology 6,854 6,854 Relationship with humans 5,015 27,089 Economic importance 5,969 5,969 In religion and mythology 6,391 6,391 In culture and folklore 7,192 7,192 In music 2,522 2,522 Threats and conservation 6,120 6,120 See also 201 201 References 30 30 Further reading 1,176 1,176 External links 2,684 2,684 Total 240,586 240,586

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The beginning of the article reads "There are over 11,000 living species" without any reference. This is true according to BirdLife taxonomy, but not according to BirdTree, which recognize only about 10,000 species.

A more accurate description is given later in the text: "The number of known living bird species is around 11,000 [56][57] although sources may differ in their precise numbers". The numbers in the references are slightly above or below 11,000. I suggest changing the sentence in the beginning to "There are around 11,000 living species", with the two references given later in the text, also adding a reference to the BirdTree taxonomy: https://birdtree.org/ or https://doi.org/10.1038/nature11631 Yuvalr (talk) 12:08, 18 April 2024 (UTC)[reply]

All three regularly updated checklists are now over 11,000 species. HBW/Birdlife (11,195 species) has been for several years and eBird/Clements (11,017) and the IOC (11,032 extant and 162 extinct) have recently passed 11,000. Refs 56 and 57 can be updated for the new ones. The Howard & Moore checklist recognises less species, but hadn't been updated in ten years (although an update is in progress). The Birdtree number is based on a combination BirdLife v3 (2010) and IOC v2.7 (~2010). So "around 11,000 living species" is a safe statement. —  Jts1882 | talk  13:05, 18 April 2024 (UTC)[reply]

I'm hesistant to make any big bold changes to an FA but is it possible that this source may be of use somewhere? It states that the North America bird population "is down by 2.9 billion breeding adults". Seems like the sort of thing that may be worth noting. Europe is also missing some birds. [1] If it were to be added, this section seems like it would make the most sense. I'm sure if one went digging they could find information about other continents as well. Clovermoss🍀 (talk) 13:27, 4 May 2024 (UTC)[reply]

A couple of sentences seem appropriate. In addition to your sentence on North America, a sentence saying a similar fall has been observed in Europe (25% in 40 years) and that these falls have been attributed to intensive farming and habitat loss. It may be hard to find similar surveys for other continents, although you'd expect similar declines in other intensively farmed regions. —  Jts1882 | talk  15:59, 5 May 2024 (UTC)[reply]