CiteULike | Further Information

• {"link"=>{"url"=>"http://www.citeulike.org/user/nathawk1/article/11776909"}, "post_time"=>"2012-11-25 16:12:58", "tag"=>"no-tag", "linkout"=>[{"type"=>"DOI", "url"=>"http://dx.doi.org/10.1371/journal.pone.0026887"}, {"type"=>"Pubmed Central", "url"=>"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3237408/"}, {"type"=>"Pubmed", "url"=>"http://view.ncbi.nlm.nih.gov/pubmed/22194779"}, {"type"=>"Hubmed", "url"=>"http://www.hubmed.org/display.cgi?uids=22194779"}], "username"=>"nathawk1", "article_id"=>"11776909"}

Mendeley | Further Information

{"title"=>"New Caledonian crows learn the functional properties of novel tool types", "type"=>"journal", "authors"=>[{"first_name"=>"Alex H.", "last_name"=>"Taylor", "scopus_author_id"=>"11139315800"}, {"first_name"=>"Douglas M.", "last_name"=>"Elliffe", "scopus_author_id"=>"6602103674"}, {"first_name"=>"Gavin R.", "last_name"=>"Hunt", "scopus_author_id"=>"7202673961"}, {"first_name"=>"Nathan J.", "last_name"=>"Emery", "scopus_author_id"=>"6701573095"}, {"first_name"=>"Nicola S.", "last_name"=>"Clayton", "scopus_author_id"=>"7005846043"}, {"first_name"=>"Russell D.", "last_name"=>"Gray", "scopus_author_id"=>"7403689938"}], "year"=>2011, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "isbn"=>"10.1371/journal.pone.0026887", "pmid"=>"22194779", "scopus"=>"2-s2.0-83355168767", "doi"=>"10.1371/journal.pone.0026887", "sgr"=>"83355168767", "pui"=>"363076141"}, "id"=>"2d769809-f671-313e-8aad-5b6fa0f41e71", "abstract"=>"New Caledonian crows were presented with Bird and Emery's (2009a) Aesop's fable paradigm, which requires stones to be dropped into a water-filled tube to bring floating food within reach. The crows did not spontaneously use stones as tools, but quickly learned to do so, and to choose objects and materials with functional properties. Some crows discarded both inefficient and non-functional objects before observing their effects on the water level. Interestingly, the crows did not learn to discriminate between functional and non-functional objects and materials when there was an arbitrary, rather than causal, link between object and reward. This finding suggests that the crows' performances were not based on associative learning alone. That is, learning was not guided solely by the covariation rate between stimuli and outcomes or the conditioned reinforcement properties acquired by functional objects. Our results, therefore, show that New Caledonian crows can process causal information not only when it is linked to sticks and stick-like tools but also when it concerns the functional properties of novel types of tool.", "link"=>"http://www.mendeley.com/research/new-caledonian-crows-learn-functional-properties-novel-tool-types-6", "reader_count"=>66, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Student > Doctoral Student"=>6, "Researcher"=>11, "Student > Ph. D. Student"=>16, "Student > Master"=>10, "Other"=>4, "Student > Bachelor"=>14, "Professor"=>3}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Student > Doctoral Student"=>6, "Researcher"=>11, "Student > Ph. D. Student"=>16, "Student > Master"=>10, "Other"=>4, "Student > Bachelor"=>14, "Professor"=>3}, "reader_count_by_subject_area"=>{"Unspecified"=>4, "Environmental Science"=>3, "Agricultural and Biological Sciences"=>39, "Arts and Humanities"=>2, "Veterinary Science and Veterinary Medicine"=>1, "Physics and Astronomy"=>2, "Psychology"=>10, "Social Sciences"=>1, "Computer Science"=>1, "Earth and Planetary Sciences"=>1, "Biochemistry, Genetics and Molecular Biology"=>1, "Medicine and Dentistry"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Social Sciences"=>{"Social Sciences"=>1}, "Physics and Astronomy"=>{"Physics and Astronomy"=>2}, "Psychology"=>{"Psychology"=>10}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>39}, "Computer Science"=>{"Computer Science"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>4}, "Environmental Science"=>{"Environmental Science"=>3}, "Arts and Humanities"=>{"Arts and Humanities"=>2}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>1}}, "reader_count_by_country"=>{"Venezuela"=>1, "Romania"=>1, "United States"=>4, "Luxembourg"=>1, "Brazil"=>1, "United Kingdom"=>1, "Germany"=>1}, "group_count"=>2}

ORCID | Further Information

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• http://doi.org/10.1111/sjp.12123
• http://doi.org/10.1098/rsif.2016.0310
• http://doi.org/10.1073/pnas.1208724109
• http://doi.org/10.1007/s10071-018-1206-y
• http://doi.org/10.1371/journal.pone.0193264
• http://doi.org/10.1163/1568539X-00003515
• http://doi.org/10.1098/rstb.2012.0418
• http://doi.org/10.1098/rspb.2012.1998
• http://doi.org/10.1007/s10071-016-1018-x
• http://doi.org/10.1163/1568539X-00003411
• http://doi.org/10.1371/journal.pone.0092895
• http://doi.org/10.1016/j.anbehav.2018.05.005
• http://doi.org/10.1002/wcs.1322
• http://doi.org/10.1016/j.beproc.2016.11.008
• http://doi.org/10.1098/rstb.2013.0114
• http://doi.org/10.1371/journal.pone.0103049
• http://doi.org/10.1038/s41598-018-33458-z
• http://doi.org/10.1371/journal.pone.0133253
• http://doi.org/10.1007/s10071-012-0591-x
• http://doi.org/10.3161/150811014X687305
• http://doi.org/10.1098/rsos.160247
• http://doi.org/10.1016/j.anbehav.2016.10.029
• http://doi.org/10.1371/journal.pone.0040574
• http://doi.org/10.1098/rspb.2014.0837
• http://doi.org/10.1093/cz/zoy070
• http://doi.org/10.7717/peerj.1707
• http://doi.org/10.1080/19420889.2015.1035846
• http://doi.org/10.7717/peerj.1975
• http://doi.org/10.1098/rstb.2012.0422
• http://doi.org/10.1002/wcs.1286
• http://doi.org/10.1371/journal.pone.0168056
• http://doi.org/10.7717/peerj.3484
• http://doi.org/10.1098/rspb.2018.2332
• http://doi.org/10.3389/fpsyg.2015.00091
• http://doi.org/10.3390/bs6030015
• http://doi.org/10.1007/s10071-017-1129-z

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PubMed Central

• 3479607
• 4027415
• 4027416
• 4027421
• 3497243
• 4071556
• 3625412
• 3405099
• 3966847
• 4108369
• 4534463
• 4594378
• 4319388
• 4768697

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• {"type"=>"COMMENT", "annotationUri"=>"info:doi/10.1371/annotation/e4739838-26ca-4ef7-8131-899b6b7c94d2", "title"=>"Media Coverage of This Article", "body"=>"The following article represents some of the media coverage that has occurred for this paper:\n\nPublication: The Dominion Post \nTitle: “Psychology | Science Proves Crows Are No Bird Brains... | Stuff.co.nz”\nhttp://www.stuff.co.nz/dominion-post/news/6148553/Science-proves-crows-are-no-bird-brains\n\nPublication: Eureka Alert \nTitle: “Crows show advanced learning abilities”\nhttp://www.eurekalert.org/pub_releases/2011-12/plos-csa121211.php\n\nIf you see any additional coverage of this paper in the press or blogosphere, please reply to this thread and add the link to the article. ", "isRemoved"=>false, "created"=>"2011-12-16T21:01:50Z", "lastModified"=>"2011-12-16T21:01:50Z", "creator"=>{"userId"=>"80539"}, "highlightedText"=>"", "competingInterestStatement"=>{"creatorWasPrompted"=>true, "hasCompetingInterests"=>true, "body"=>"PLoS ONE Staff"}, "parentArticle"=>{"doi"=>"info:doi/10.1371/journal.pone.0026887", "state"=>"published", "journals"=>{"PLoSONE"=>{"journalKey"=>"PLoSONE", "eIssn"=>"1932-6203", "title"=>"PLOS ONE"}}}, "replyTreeSize"=>0, "mostRecentActivity"=>"2011-12-16T21:01:50Z", "replies"=>[]}

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• {"id"=>"1021480401569832960", "text"=>"Crows have the intelligence of a 7yo human. The Terrokar are real. I've always known.\nhttps://t.co/rjMJgW4zix", "created_at"=>"2018-07-23T19:41:20Z", "user"=>"joshdalengo", "user_name"=>"black girl feminist gay rights lover or whatever", "user_profile_image"=>"http://pbs.twimg.com/profile_images/992648983678980096/K3J_VhRV_normal.jpg"}
• {"id"=>"221630866219212800", "text"=>"Interesting paper on tool use in non-humans http://t.co/PYkiLNQM", "created_at"=>"2012-07-07T15:44:50Z", "user"=>"livingarchitect", "user_name"=>"Rachel Armstrong", "user_profile_image"=>"http://a0.twimg.com/profile_images/1480466898/8860_200_150_normal.jpg"}
• {"id"=>"221642407102525442", "text"=>"RT @livingarchitect: Interesting paper on tool use in non-humans http://t.co/PYkiLNQM", "created_at"=>"2012-07-07T16:30:42Z", "user"=>"draskyvanderhof", "user_name"=>"Alejandro Kondrasky", "user_profile_image"=>"http://a0.twimg.com/profile_images/1757665191/mini_pic2_normal.jpg"}
• {"id"=>"221662624184676354", "text"=>"RT @livingarchitect: Interesting paper on tool use in non-humans http://t.co/PYkiLNQM", "created_at"=>"2012-07-07T17:51:02Z", "user"=>"MelissaSterry", "user_name"=>"MELISSA STERRY", "user_profile_image"=>"http://a0.twimg.com/profile_images/2036712582/Picture_2_normal.jpg"}
• {"id"=>"987737956898213888", "text"=>"https://t.co/lM8Sjnlj6O TIL that crows are one of the smartest non-primate animals on earth, with the intelligence… https://t.co/vcjoGIOg5s", "created_at"=>"2018-04-21T17:00:54Z", "user"=>"Reddit_TIL", "user_name"=>"Today I Learned", "user_profile_image"=>"http://pbs.twimg.com/profile_images/429063843159887872/q_3verpq_normal.png"}
• {"id"=>"987738115719622656", "text"=>"Source: https://t.co/eCvxKeTev0\n\n(h/t >> https://t.co/u9tLWazH62) https://t.co/zBw2t7DDSh", "created_at"=>"2018-04-21T17:01:32Z", "user"=>"TILRobot", "user_name"=>"?Today I Learned?", "user_profile_image"=>"http://pbs.twimg.com/profile_images/817844025185030144/t99H4oQd_normal.jpg"}
• {"id"=>"987764246036574208", "text"=>"TIL that crows are one of the smartest non-primate animals on earth, with the intelligence of a...... https://t.co/bYxOkZwT9a", "created_at"=>"2018-04-21T18:45:22Z", "user"=>"watrcoolr", "user_name"=>"WatrCoolr", "user_profile_image"=>"http://pbs.twimg.com/profile_images/101812880/letter_normal.png"}
• {"id"=>"987784023454961665", "text"=>"#PLOSONE: New Caledonian Crows Learn the Functional Properties of Novel Tool Types https://t.co/SChANQyWWt", "created_at"=>"2018-04-21T20:03:57Z", "user"=>"calysto0", "user_name"=>"Vitor Calisto Silva", "user_profile_image"=>"http://pbs.twimg.com/profile_images/590993946311938048/tHsPgczx_normal.png"}
• {"id"=>"987800610107019266", "text"=>"https://t.co/8LL78TUHnQ", "created_at"=>"2018-04-21T21:09:52Z", "user"=>"the_mantese", "user_name"=>"Jose Jaimes", "user_profile_image"=>"http://pbs.twimg.com/profile_images/3016054190/a6a03ed0eabb1179a40e2d76109ef477_normal.jpeg"}
• {"id"=>"987804201664294914", "text"=>"Crows have the intelligence of a 7yo human. The Terrokar are real. I've always known.\nhttps://t.co/rjMJgW4zix", "created_at"=>"2018-04-21T21:24:08Z", "user"=>"joshdalengo", "user_name"=>"Josh D(ellem) Alengo", "user_profile_image"=>"http://pbs.twimg.com/profile_images/805878710754836480/BlZgxqL6_normal.jpg"}
• {"id"=>"987806810651308032", "text"=>"I have long found crows to be unsettling creatures. https://t.co/OlFtNG9QVL", "created_at"=>"2018-04-21T21:34:30Z", "user"=>"scottpwright", "user_name"=>"Scott Wright", "user_profile_image"=>"http://pbs.twimg.com/profile_images/661961075512905728/o_X-TBHl_normal.jpg"}
• {"id"=>"987827570568769541", "text"=>"@johnroderick The crows know https://t.co/ODYJfXLOrO", "created_at"=>"2018-04-21T22:57:00Z", "user"=>"jakebouma", "user_name"=>"J?ke Bouma", "user_profile_image"=>"http://pbs.twimg.com/profile_images/921214095503872000/9RjYyeBo_normal.jpg"}

Wikipedia | Further Information

• {"title"=>"The Crow and the Pitcher", "url"=>"http://en.wikipedia.org/wiki/The_Crow_and_the_Pitcher", "timestamp"=>"2019-03-14T01:24:04Z"}
• {"title"=>"File:New-Caledonian-Crows-Learn-the-Functional-Properties-of-Novel-Tool-Types-pone.0026887.s001.ogv", "url"=>"http://commons.wikimedia.org/wiki/File:New-Caledonian-Crows-Learn-the-Functional-Properties-of-Novel-Tool-Types-pone.0026887.s001.ogv", "timestamp"=>"2018-04-16T01:04:08Z"}
• {"title"=>"File:New-Caledonian-Crows-Learn-the-Functional-Properties-of-Novel-Tool-Types-pone.0026887.s002.ogv", "url"=>"http://commons.wikimedia.org/wiki/File:New-Caledonian-Crows-Learn-the-Functional-Properties-of-Novel-Tool-Types-pone.0026887.s002.ogv", "timestamp"=>"2018-04-16T01:04:08Z"}

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Figshare

• {"files"=>["https://ndownloader.figshare.com/files/701855"], "description"=>"<p>Green squares indicate the drop of a stone into water, and red squares the drop of a stone into sand. Each column denotes the performances of one bird (from left to right: Laura, Caesar, Pepe, Mimic).</p>", "links"=>[], "tags"=>["neuroscience", "Evolutionary biology"], "article_id"=>372233, "categories"=>["Evolutionary Biology", "Neuroscience"], "users"=>["Alex H. Taylor", "Douglas M. Elliffe", "Gavin R. Hunt", "Nathan J. Emery", "Nicola S. Clayton", "Russell D. Gray"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0026887.g004", "stats"=>{"downloads"=>0, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Trial_by_trial_description_of_each_individual_stone_drop_in_Experiment_4_/372233", "title"=>"Trial-by-trial description of each individual stone drop in Experiment 4.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:37:13"}
• {"files"=>["https://ndownloader.figshare.com/files/701525"], "description"=>"<p>(1) The presentation of stones in Experiments 1 and 2, (2) The presentation of stones in Experiment 3, and (3) the presentation of heavy and light objects in Experiment 6.</p>", "links"=>[], "tags"=>["objects", "positioned"], "article_id"=>371898, "categories"=>["Evolutionary Biology", "Neuroscience"], "users"=>["Alex H. Taylor", "Douglas M. Elliffe", "Gavin R. Hunt", "Nathan J. Emery", "Nicola S. Clayton", "Russell D. Gray"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0026887.g001", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/The_experimental_apparatus_with_objects_positioned_next_to_it_/371898", "title"=>"The experimental apparatus, with objects positioned next to it.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:31:38"}
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• {"files"=>["https://ndownloader.figshare.com/files/701650"], "description"=>"<p>(1) The tool setup in Experiment 9, and (2) the setup in Experiment 10.</p>", "links"=>[], "tags"=>["apparatus", "experiments"], "article_id"=>372028, "categories"=>["Evolutionary Biology", "Neuroscience"], "users"=>["Alex H. Taylor", "Douglas M. Elliffe", "Gavin R. Hunt", "Nathan J. Emery", "Nicola S. Clayton", "Russell D. Gray"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0026887.g002", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Diagram_of_the_apparatus_used_in_Experiments_9_and_10_/372028", "title"=>"Diagram of the apparatus used in Experiments 9 and 10.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:33:48"}
• {"files"=>["https://ndownloader.figshare.com/files/702129"], "description"=>"<p>The solid line shows the learning curve for the stone dropping task (Experiment 3). The dashed line shows the learning curve for the searching task (Experiment 7).</p>", "links"=>[], "tags"=>["curves", "dropping", "searching"], "article_id"=>372505, "categories"=>["Evolutionary Biology", "Neuroscience"], "users"=>["Alex H. Taylor", "Douglas M. Elliffe", "Gavin R. Hunt", "Nathan J. Emery", "Nicola S. Clayton", "Russell D. Gray"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0026887.g007", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Learning_curves_for_the_large_stone_small_stone_discrimination_task_during_the_stone_dropping_and_searching_paradigms_/372505", "title"=>"Learning curves for the large stone/small stone discrimination task during the stone dropping and searching paradigms.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:41:45"}
• {"files"=>["https://ndownloader.figshare.com/files/702196"], "description"=>"<p>The solid line shows the learning curve for the stone dropping task (Experiment 4). The dashed line shows the learning curve for the searching task (Experiment 8).</p>", "links"=>[], "tags"=>["curves", "water-filled", "dropping", "searching"], "article_id"=>372575, "categories"=>["Evolutionary Biology", "Neuroscience"], "users"=>["Alex H. Taylor", "Douglas M. Elliffe", "Gavin R. Hunt", "Nathan J. Emery", "Nicola S. Clayton", "Russell D. Gray"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0026887.g008", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Learning_curves_for_the_water_filled_tube_sand_filled_tube_discrimination_task_during_the_stone_dropping_and_searching_paradigms_/372575", "title"=>"Learning curves for the water-filled tube/sand-filled tube discrimination task during the stone dropping and searching paradigms.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:42:55"}

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F1000Prime