New Caledonian Crows Learn the Functional Properties of Novel Tool Types
Publication Date
December 14, 2011
Journal
PLOS ONE
Authors
Alex H. Taylor, Douglas M. Elliffe, Gavin R. Hunt, Nathan J. Emery, et al
Volume
6
Issue
12
Pages
e26887
DOI
https://dx.plos.org/10.1371/journal.pone.0026887
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0026887
PubMed
http://www.ncbi.nlm.nih.gov/pubmed/22194779
PubMed Central
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3237408
Europe PMC
http://europepmc.org/abstract/MED/22194779
Web of Science
000298369100002
Scopus
83355168767
Mendeley
http://www.mendeley.com/research/new-caledonian-crows-learn-functional-properties-novel-tool-types-6
Events
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Mendeley | Further Information

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Scopus | Further Information

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Figshare

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  • {"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"}
  • {"files"=>["https://ndownloader.figshare.com/files/356719", "https://ndownloader.figshare.com/files/356828"], "description"=>"<div><p>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.</p> </div>", "links"=>[], "tags"=>["caledonian", "crows", "properties", "types"], "article_id"=>130499, "categories"=>["Evolutionary Biology", "Neuroscience"], "users"=>["Alex H. Taylor", "Douglas M. Elliffe", "Gavin R. Hunt", "Nathan J. Emery", "Nicola S. Clayton", "Russell D. Gray"], "doi"=>[nil, nil], "stats"=>{"downloads"=>3, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/New_Caledonian_Crows_Learn_the_Functional_Properties_of_Novel_Tool_Types/130499", "title"=>"New Caledonian Crows Learn the Functional Properties of Novel Tool Types", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2011-12-14 00:08:19"}
  • {"files"=>["https://ndownloader.figshare.com/files/702053"], "description"=>"<p>Green squares indicate the drop of a heavy block, red squares the drop of a light block, yellow squares the discard of a light block and orange squares the discard of a heavy block. Numbers within squares indicate the number of times that a light block was repeatedly picked up and discarded. Each column denotes the performances of one bird. (a) The performances of Laura (left) and Caesar (right). (b) The performances of Pepe (left) and Mimic (right).</p>", "links"=>[], "tags"=>["neuroscience", "Evolutionary biology"], "article_id"=>372433, "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.g006", "stats"=>{"downloads"=>1, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Trial_by_trial_description_of_each_individual_object_drop_in_Experiment_6_/372433", "title"=>"Trial-by-trial description of each individual object drop in Experiment 6.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:40:33"}
  • {"files"=>["https://ndownloader.figshare.com/files/701960"], "description"=>"<p>Green squares indicate the drop of a stone dropped into water and red squares indicate the drop of a stone into air. Each column denotes the performances of one bird (from left to right: Laura, Caesar, Pepe, Mimic).</p>", "links"=>[], "tags"=>["neuroscience", "Evolutionary biology"], "article_id"=>372335, "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.g005", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Trial_by_trial_description_of_each_individual_stone_drop_in_Experiment_5_/372335", "title"=>"Trial-by-trial description of each individual stone drop in Experiment 5.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:38:55"}
  • {"files"=>["https://ndownloader.figshare.com/files/701769"], "description"=>"<p>Green squares indicate the drop of a large stone, red squares the drop of a small stone, and yellow squares indicates a small stone was picked up and discarded. Each column denotes the performances of one bird (from left to right: Laura, Caesar, Pepe, Mimic).</p>", "links"=>[], "tags"=>["neuroscience", "Evolutionary biology"], "article_id"=>372144, "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.g003", "stats"=>{"downloads"=>1, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Trial_by_trial_description_of_each_individual_stone_drop_in_Experiment_3_/372144", "title"=>"Trial-by-trial description of each individual stone drop in Experiment 3.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-12-14 00:35:44"}
  • {"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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Relative Metric

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