Gagak kaledonia baru: Perbedaan antara revisi

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* [http://users.ox.ac.uk/~kgroup/ Oxford University crow research web site] {{Webarchive|url=https://web.archive.org/web/20061005034611/http://users.ox.ac.uk/~kgroup/ |date=2006-10-05 }}, including photos and movies
* [http://www.psych.auckland.ac.nz/uoa/home/about/our-research/research-groups/Cognition-and-culture-in-New-Caledonian-crows Auckland University crow web page]{{Pranala mati|date=Maret 2021 |bot=InternetArchiveBot |fix-attempted=yes }}, an introduction to their field-based research on crows' tool manufacture and use, including video footage of meta-tool use
* [http://news.nationalgeographic.com/news/2002/08/0808_020808_crow.html From National Geographic: A video of the New Caledonian Crow making a hook out of wire] {{Webarchive|url=https://archive.phtoday/20120630033500/http://news.nationalgeographic.com/news/2002/08/0808_020808_crow.html |date=2012-06-30 }} (August 8, 2002)
* [http://www.livescience.com/animalworld/061031_crow_tools.html Tool use in crows is a combination of natural ability and schooling by other crows] {{Webarchive|url=https://web.archive.org/web/20081203153402/http://www.livescience.com/animalworld/061031_crow_tools.html |date=2008-12-03 }} – LiveScience.com (October 31, 2006)
* [http://news.bbc.co.uk/1/hi/sci/tech/6948446.stm BBC news website item about the New Caledonian Crow] {{Webarchive|url=https://web.archive.org/web/20080409041540/http://news.bbc.co.uk/1/hi/sci/tech/6948446.stm |date=2008-04-09 }}, includes video footage of tool use (August 16, 2007)