Corvidae: Difference between revisions - Wikipedia

Line 14:

<div style="text-align:left;"><big>{{Legend2|#00BE30|Native|border=1px solid #aaa}} {{Legend2|#F3F300|(Re)Introduced|border=1px solid #aaa}}</big></div> <div style="text-align:left;"><big>{{Legend2|#15A3EB|Extinct (post-1500)|border=1px solid #aaa}} {{Legend2|#FF0000|Extinct (pre-1500)|border=1px solid #aaa}}</big></div>

}}

'''Corvidae''' is a [[Cosmopolitan distribution|cosmopolitan]] [[Family (biology)|family]] of [[Songbird|oscine]] [[passerine]] [[bird]]s that contains the [[crow]]s, [[raven]]s, [[Rook (bird)|rooks]], [[magpie]]s, [[jackdaw]]s, [[jay]]s, [[treepie]]s, [[chough]]s, and [[Nutcracker (bird)|nutcrackers]].<ref name=madge/><ref name = robertson2000/><ref name = claytonemery2005/> In [[Colloquialism|colloquial]] English, they are known as the '''crow family''' or '''corvids'''. Currently, 135 species are included in this family. The genus ''[[Corvus]]'' containing 47 species makes up over a third of the entire family.<ref name=ioc>{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | editor3-last=Rasmussen | editor3-first=Pamela | editor3-link=Pamela Rasmussen | date=January 2023 | title=Crows, mudnesters, birds-of-paradise | work=IOC World Bird List Version 13.1 | url=https://www.worldbirdnames.org/bow/crows/ | publisher=International Ornithologists' Union | access-date=15 May 2023 }}</ref> Corvids ([[Raven|ravens]]) are the largest passerines.

Corvids display remarkable [[Animal cognition|intelligence]] for animals of their size, and are among the most [[Bird intelligence|intelligent birds]] thus far studied.<ref>{{Cite journal|last1=Emery|first1=N. J.|last2=Clayton|first2=Nicola S.|date=2004|title=The mentality of crows: Convergent evolution of Intelligence in corvids and apes|url=https://www.science.org/doi/10.1126/science.1098410|journal=Science|language=en|volume=306|issue=5703|pages=1903–1907|doi=10.1126/science.1098410|pmid=15591194 |bibcode=2004Sci...306.1903E |s2cid=9828891 |issn=0036-8075}}</ref> Specifically, members of the family have demonstrated [[self-awareness]] in [[mirror test]]s ([[Eurasian magpie]]s) and [[Tool use by animals|tool-making ability]] (e.g. crows and rooks<ref>{{Cite news| url=http://news.bbc.co.uk/2/hi/science/nature/8059688.stm | work=BBC News | title=Rooks reveal remarkable tool-use | date=26 May 2009 | access-date=2 April 2010}}</ref>), skills which until recently were thought to be possessed only by humans and a few other higher [[mammal]]s. Their total [[Brain–body mass ratio|brain-to-body mass ratio]] is equal to that of non-human [[Hominidae|great apes]] and [[Cetacea|cetaceans]], and only slightly lower than that of humans.<ref name="birding">Birding in India and South Asia: [http://www.birding.in/birds/Passeriformes/corvidae.htm Corvidae]. Retrieved 2007-NOV-10</ref>