Editing Animal language (section)

===Birds===
* [[Bird song]]s: Songbirds can be highly articulate. [[Grey parrot]]s and [[macaw]]s are well known for their ability to mimic human language. At least one specimen, [[Alex (parrot)|Alex]], appeared able to answer a number of simple questions about objects he was presented with, such as answering simple mathematical equations and identifying colors. Parrots, hummingbirds and songbirds display vocal learning patterns.{{Citation needed|date=January 2024}} [[Crow]]s have been studied for their ability to understand recursion.<ref>{{Cite journal |last1=Liao |first1=Diana A. |last2=Brecht |first2=Katharina F. |last3=Johnston |first3=Melissa |last4=Nieder |first4=Andreas |date=2022-11-04 |title=Recursive sequence generation in crows |journal=Science Advances |language=en |volume=8 |issue=44 |pages=eabq3356 |doi=10.1126/sciadv.abq3356 |issn=2375-2548 |pmc=9629703 |pmid=36322648|bibcode=2022SciA....8.3356L }}</ref>