The evolutionary origins and ecological context of tool use in New Caledonian crows

Behavioural Processes

Volumn 89, Issue 2, 2012, Pages 153-165

  Rutz, Christian ^a   St Clair, James J H ^a  

^a UNIVERSITY OF OXFORD   (United Kingdom)

Author keywords

Animal culture; Cognition; Convergent evolution; Extractive foraging; Social learning; Woodpecker

Indexed keywords

ADAPTATION; BEHAVIORAL ECOLOGY; BIOACCUMULATION; BIRD; COGNITION; COMPARATIVE STUDY; COMPETITION (ECOLOGY); CONVERGENT EVOLUTION; ECOLOGICAL APPROACH; FORAGING BEHAVIOR; FUNCTIONAL MORPHOLOGY; GENETIC ANALYSIS; INVERTEBRATE; JUVENILE; LIFE HISTORY TRAIT; NICHE; PHYLOGENETICS; PREDATION RISK; PREDATOR-PREY INTERACTION; STABLE ISOTOPE; TOOL USE; VEGETATION STRUCTURE; WILD POPULATION;

ANIMAL BEHAVIOR; ANTHROPOLOGY; AUSTRALIA AND NEW ZEALAND; COMPARATIVE STUDY; COMPETITION; CORVUS MONEDULOIDES; CROW; ECOLOGY; ENERGY; EVOLUTION; FORAGING; GENETIC PREDISPOSITION; LIFE HISTORY; MORPHOLOGY; NEW CALEDONIA; NONHUMAN; PHYLOGENY; PREDATION RISK; REVIEW; SOUTHEAST ASIA; TIME; TOOL USE;

ANIMALS; APPETITIVE BEHAVIOR; BIOLOGICAL EVOLUTION; CROWS; ENVIRONMENT; NEW CALEDONIA; TOOL USE BEHAVIOR;

NEW CALEDONIA [MELANESIA];

ANIMALIA; AVES; COLEOPTERA; CORVIDAE; CORVUS MONEDULOIDES; INVERTEBRATA;

EID: 84856403645     PISSN: 03766357     EISSN: 18728308     Source Type: Journal    
DOI: 10.1016/j.beproc.2011.11.005     Document Type: Review

References (136)

1. Alcock J. The evolution of the use of tools by feeding animals. Evolution 1972, 26:464-473.
2. Auersperg A.M.I., von Bayern A.M.P., Gajdon G.K., Huber L., Kacelnik A. Flexibility in problem solving and tool use of kea and New Caledonian crows in a multi access box paradigm. PLoS One 2011, 6:e20231.
3. Baerends G.P. An evaluation of the conflict hypothesis as an explanatory principle for the evolution of displays. Function and Evolution in Behaviour 1975, 187-227. Clarendon Press, Oxford. G. Baerends, C. Beer, A. Manning (Eds.).
4. Barker F.K., Cibois A., Schikler P., Feinstein J., Cracraft J. Phylogeny and diversification of the largest avian radiation. Proc. Natl. Acad. Sci. U.S.A. 2004, 101:11040-11045.
5. Barré N., Dutson G. Oiseaux de Nouvelle-Calédonie: liste commentée. Alauda 2000, 68:1-48.
6. Beck B.B. Animal Tool Behavior 1980, Garland, New York.
7. Beck R.M.D. Was the Oligo-Miocene Australian metatherian Yalkaparidon a 'mammalian woodpecker'?. Biol. J. Linn. Soc. 2009, 97:1-17.
8. Bentley-Condit V.K., Smith E.O. Animal tool use: current definitions and an updated comprehensive catalog. Behaviour 2010, 147:185-221.
9. Bird C.D., Emery N.J. Insightful problem solving and creative tool modification by captive nontool-using rooks. Proc. Natl. Acad. Sci. U.S.A. 2009, 106:10370-10375.
10. Bluff, L.A., 2008. Tool Use, Foraging Ecology and Social Dynamics in New Caledonian Crows. D.Phil. Thesis. University of Oxford, Oxford.
11. Bluff L.A., Kacelnik A., Rutz C. Vocal culture in New Caledonian crows Corvus moneduloides. Biol. J. Linn. Soc. 2010, 101:767-776.
12. Bluff L.A., Rutz C. A quick guide to video-tracking birds. Biol. Lett. 2008, 4:319-322.
13. Bluff L.A., Troscianko J., Weir A.A.S., Kacelnik A., Rutz C. Tool use by wild New Caledonian crows Corvus moneduloides at natural foraging sites. Proc. R. Soc. B 2010, 277:1377-1385.
14. Bluff L.A., Weir A.A.S., Rutz C., Wimpenny J.H., Kacelnik A. Tool-related cognition in New Caledonian crows. Comp. Cogn. Behav. Rev. 2007, 2:1-25.
15. Bock W.J. Functional and evolutionary morphology of woodpeckers. Ostrich 1999, 70:23-31.
16. Bodenheimer F.S. Insects as Human Food: A Chapter in the Ecology of Man 1951, Dr W. Junk Publishers, The Hague.
17. Boesch C., Boesch-Achermann H. The Chimpanzees of the Taï Forest 2000, Oxford University Press, Oxford.
18. Boyd R., Richerson P.J. Why culture is common, but cultural evolution is rare. Proc. Brit. Acad. 1996, 88:77-93.
19. Boyd R., Richerson P.J. The Origin and Evolution of Cultures 2005, Oxford University Press, Oxford.
20. Boyd R., Silk J.B. How Humans Evolved 2006, W.W. Norton & Co., London.
21. Boyer A.G., James H.F., Olson S.L., Grand-Mackie J.A. Long-term ecological change in a conservation hotspot: the fossil avifauna of Mé Auré Cave, New Caledonia. Biodivers. Conserv. 2010, 19:3207-3224.
22. Caldwell C.A., Millen A.E. Studying cumulative cultural evolution in the laboratory. Philos. Trans. R. Soc. B 2008, 363:3529-3539.
23. Chappell J., Kacelnik A. Tool selectivity in a non-mammal, the New Caledonian crow (Corvus moneduloides). Anim. Cogn. 2002, 5:71-78.
24. Chappell J., Kacelnik A. Selection of tool diameter by New Caledonian crows Corvus moneduloides. Anim. Cogn. 2004, 7:121-127.
25. Chartendrault, V., Desmoulins, F., Barré, N., 2007. Oiseaux de la Chaîne Centrale Province Nord de Nouvelle-Calédonie. L'Institut Agronomique néo-Calédonien (IAC), Province Nord, Nouméa, Nouvelle-Calédonie.
26. Cnotka J., Güntürkün O., Rehkämper G., Gray R.D., Hunt G.R. Extraordinary large brains in tool-using New Caledonian crows (Corvus moneduloides). Neurosci. Lett. 2008, 433:241-245.
27. Cochereau P. Observations sur la faune des bois en voie de décomposition en forêt Néo-Calédonienne. Cah. ORSTOM: Sér. Biol. 1970, 12:123-127.
28. Darwin C.R. The Descent of Man, and Selection in Relation to Sex 1879, John Murray, London.
29. Delacour J. Guide des Oiseaux de la Nouvelle-Calédonie et de ses Dépendances 1966, éditions Delachaux & Niestlé, Neuchatel, Switzerland.
30. de Kort S.R., Clayton N.S. An evolutionary perspective on caching by corvids. Proc. R. Soc. B 2006, 273:417-423.
31. Handbook of the Birds of the World. Bush-shrikes to Old World Sparrows 2009, vol. 14. Lynx Edicions, Barcelona. J. del Hoyo, A. Elliott, D.A. Christie (Eds.).
32. Desmoulins, F., Barré, N., 2005. Oiseaux des Forêts Sèches de Nouvelle-Calédonie. Programme Forêt Sèche et Société Calédonienne d'Ornithologie Editeurs. Nouméa, Nouvelle-Calédonie.
33. Dorst J. Revision systematique du genre Corvus. L'Oiseau 1947, 17:44-87.
34. Doughty C., Day N., Plant A. Birds of the Solomons, Vanuatu and New Caledonia 1999, Christopher Helm, A & C Black, London.
35. Dutson G. Birds of Melanesia - Bismarcks, Solomons, Vanuatu and New Caledonia 2011, Christopher Helm, London.
36. Elevitch C.R., Manner H.I. Aleurites moluccana (kukui), ver. 2.1. Species Profiles for Pacific Island Agroforestry 2006, Permanent Agriculture Resources (PAR), Hōlualoa, Hawaii, . C.R. Elevitch (Ed.).
37. Emery N.J., Clayton N.S. The mentality of crows: convergent evolution of intelligence in corvids and apes. Science 2004, 306:1903-1907.
38. Emery N.J., Clayton N.S. Tool use and physical cognition in birds and mammals. Curr. Opin. Neurobiol. 2009, 19:27-33.
39. Fain M.G., Houde P. Parallel radiations in the primary clades of birds. Evolution 2004, 58:2558-2573.
40. Felsenstein J. Phylogenies and the comparative method. Am. Nat. 1985, 125:1-15.
41. Gamauf A., Däubl B., Kryukov A., Pinsker W., Haring E. Phylogeography and synchronous diversification of the Corvus corvids of the world. Berichte des Institutes für Erdwissenschaften, Karl-Franzens-Universität Graz, 15 2010, p. 14.
42. Gargominy O., Bouchet P., Pascal M., Jaffré T., Tourneur J.-C. Conséquences des introductions d'espèces animales et végétales sur la biodiversité en Nouvelle-Calédonie. Rev. Ecol. (Terre Vie) 1996, 51:375-404.
43. Gonzalez-Lagos C., Sol D., Reader S.M. Large-brained mammals live longer. J. Evol. Biol. 2010, 23:1064-1074.
44. Goodall J. Tool-using and aimed throwing in a community of free-living chimpanzees. Nature 1964, 201:1264-1266.
45. Goodwin D. Crows of the World 1986, University of Washington Press, Seattle, WA.
46. Grandcolas P., Murienne J., Robillard T., Desutter-Grandcolas L., Jourdan H., Guilbert E., Deharveng L. New Caledonia: a very old Darwinian island?. Philos. Trans. R. Soc. B 2008, 363:3309-3317.
47. Handasyde K.A. Striped possum, Dactylopsila trivirgata. The Mammals of Australia 2008, 224-225. Reed New Holland, Sydney, New South Wales, Australia. S. van Dyck, R. Strahan (Eds.).
48. Hannecart, F., Létocart, Y., 1980. Oiseaux de Nlle Calédonie et des Loyautés. Les Editions Cardinalis, Nouméa, Nouvelle-Calédonie.
49. Hansell M., Ruxton G.D. Setting tool use within the context of animal construction behaviour. Trends Ecol. Evol. 2008, 23:73-78.
50. Harvey P.H., Pagel M.D. The Comparative Method in Evolutionary Biology 1991, Oxford University Press, Oxford.
51. Hawkeswood T.J., Turner J.T., Wells R.W. Further observations on the biology and host plants of the Australian longicorn beetle Agrianome spinicollis (Macleay) (Coleoptera: Cerambycidae). Mauritiana 1997, 16:327-332.
52. Holzhaider J.C., Hunt G.R., Campbell V.M., Gray R.D. Do wild New Caledonian crows (Corvus moneduloides) attend to the functional properties of their tools?. Anim. Cogn. 2008, 11:243-254.
53. Holzhaider J.C., Hunt G.R., Gray R.D. The development of pandanus tool manufacture in wild New Caledonian crows. Behaviour 2010, 147:553-586.
54. Holzhaider J.C., Hunt G.R., Gray R.D. Social learning in New Caledonian crows. Learn. Behav. 2010, 38:206-219.
55. Holzhaider J.C., Sibley M.D., Taylor A.H., Singh P.J., Gray R.D., Hunt G.R. The social structure of New Caledonian crows. Anim. Behav. 2011, 81:83-92.
56. Hunt G.R. Manufacture and use of hook-tools by New Caledonian crows. Nature 1996, 379:249-251.
57. Hunt G.R. Human-like, population-level specialization in the manufacture of pandanus tools by New Caledonian crows Corvus moneduloides. Proc. R. Soc. B 2000, 267:403-413.
58. Hunt G.R. Tool use by the New Caledonian crow Corvus moneduloides to obtain Cerambycidae from dead wood. Emu 2000, 100:109-114.
59. Hunt G.R. Introduced Lantana camara used as tools by New Caledonian crows (Corvus moneduloides). N. Z. J. Zool. 2008, 35:115-118.
60. Hunt G.R., Abdelkrim J., Anderson M.G., Holzhaider J.C., Marshall A.J., Gemmell N.J., Gray R.D. Innovative pandanus-tool folding by New Caledonian crows. Aust. J. Zool. 2007, 55:291-298.
61. Hunt G.R., Gray R.D. Species-wide manufacture of stick-type tools by New Caledonian crows. Emu 2002, 102:349-353.
62. Hunt G.R., Gray R.D. Diversification and cumulative evolution in New Caledonian crow tool manufacture. Proc. R. Soc. B 2003, 270:867-874.
63. Hunt G.R., Gray R.D. The crafting of hook tools by wild New Caledonian crows. Proc. R. Soc. B (Suppl.) 2004, 271:S88-S90.
64. Hunt G.R., Gray R.D. Direct observations of pandanus-tool manufacture and use by a New Caledonian crow (Corvus moneduloides). Anim. Cogn. 2004, 7:114-120.
65. Hunt G.R., Gray R.D. Tool manufacture by New Caledonian crows: chipping away at human uniqueness. Acta Zool. Sin. (Suppl.) 2006, 52:622-625.
66. Hunt G.R., Gray R.D. Parallel tool industries in New Caledonian crows. Biol. Lett. 2007, 3:173-175.
67. Hunt G.R., Lambert C., Gray R.D. Cognitive requirements for tool use by New Caledonian crows (Corvus moneduloides). N. Z. J. Zool. 2007, 34:1-7.
68. Hunt G.R., Rutledge R.B., Gray R.D. The right tool for the job: what strategies do wild New Caledonian crows use?. Anim. Cogn. 2006, 9:307-316.
69. Hunt G.R., Sakuma F., Shibata Y. New Caledonian Crows drop candle-nuts onto rock from communally used forks on branches. Emu 2002, 102:283-290.
70. Jaffré T., Morat P., Veillon J.-M., MacKee H.S. Changements dans la végétation de la Nouvelle-Calédonie au cours du Tertiare: la végétation et la flore des roches ultrabasiques. Bull. Mus. Natl. Hist. Nat. 1987, 4:365-391.
71. Johnson T.H., Stattersfield A.J. A global review of island endemic birds. Ibis 1990, 132:167-180.
72. Jollie M. Phylogeny of the species of Corvus. Biologist 1978, 60:73-108.
73. Kacelnik A. Tools for thought or thoughts for tools?. Proc. Natl. Acad. Sci. U.S.A. 2009, 106:10071-10072.
74. Kacelnik A., Chappell J., Kenward B., Weir A.A.S. Cognitive adaptations for tool-related behavior in New Caledonian crows. Comparative Cognition: Experimental Explorations of Animal Intelligence 2006, 515-528. Oxford University Press, Oxford. E.A. Wasserman, T.R. Zentall (Eds.).
75. Kaplan H., Hill K., Lancaster J., Magdalena Hurtado A. A theory of human life history evolution: diet, intelligence, and longevity. Evol. Anthropol. 2000, 9:156-185.
76. Kenward B., Rutz C., Weir A.A.S., Chappell J., Kacelnik A. Morphology and sexual dimorphism of the New Caledonian crow Corvus moneduloides, with notes on its behaviour and ecology. Ibis 2004, 146:652-660.
77. Kenward B., Rutz C., Weir A.A.S., Kacelnik A. Development of tool use in New Caledonian crows: inherited action patterns and social influence. Anim. Behav. 2006, 72:1329-1343.
78. Kenward B., Schlögl C., Rutz C., Weir A.A.S., Bugnyar T., Kacelnik A. On the evolutionary and ontogenetic origins of tool-oriented behaviour in New Caledonian crows (Corvus moneduloides). Biol. J. Linn. Soc. 2011, 102:870-877.
79. Kenward B., Weir A.A.S., Rutz C., Kacelnik A. Tool manufacture by naive juvenile crows. Nature 2005, 433:121.
80. The Question of Animal Culture 2009, Harvard University Press, Cambridge, MA. K.N. Laland, B.G. Galef (Eds.).
81. Laland K.N., Hoppitt W. Do animals have culture?. Evol. Anthropol. 2003, 12:150-159.
82. Laland K.N., Janik V.M. The animal cultures debate. Trends Ecol. Evol. 2006, 21:542-547.
83. Layard E.L., Layard E.L.C. Notes on the avifauna of New Caledonia. Ibis 1882, 6:520-522.
84. Lefebvre L., Nicolakakis N., Boire D. Tools and brains in birds. Behaviour 2002, 139:939-973.
85. Le Goupils M. Dans la Brousse Calédonienne: Souvenirs d'un Ancien Planteur, 1898-1904 1928, Perrin, Paris.
86. Mackee, H.S., 1985. Les Plantes Introduites et Cultivées en Nouvelle-Calédonie. Supplément à la Flore de la Nouvelle-Calédonie et Dépendances. Muséum National d'Histoire Naturelle, Laboratoire de Phanérogamie, Paris.
87. Mann J., Sargeant B.L., Watson-Capps J.J., Gibson Q.A., Heithaus M.R., Connor R.C., Patterson E. Why do dolphins carry sponges?. PLoS One 2008, 3:e3868.
88. Mehlhorn J., Hunt G.R., Gray R.D., Rehkämper G., Güntürkün O. Tool-making New Caledonian crows have large associative brain areas. Brain Behav. Evol. 2010, 75:63-70.
89. Mercader J., Panger M., Boesch C. Excavation of a chimpanzee stone tool site in the African rainforest. Science 2002, 296:1452-1455.
90. Montrouzier J.X.H. Essai sur la faune entomologique de la Nouvelle-Calédonie. Ann. Soc. Entomol. Fr. 1861, 4:265-306.
91. Newton I. Population Limitation in Birds 1998, Academic Press, London.
92. Newton I. Speciation and Biogeography of Birds 2003, Academic Press, London.
93. Nishida T., Hiraiwa M. Natural-history of a tool-using behavior by wild chimpanzees in feeding upon wood-boring ants. J. Hum. Evol. 1982, 11:73-99.
94. Orenstein R.I. Tool-use by the New Caledonian crow (Corvus moneduloides). Auk 1972, 89:674-676.
95. Overington S.E., Morand-Ferron J., Boogert N.J., Lefebvre L. Technical innovations drive the relationship between innovativeness and residual brain size in birds. Anim. Behav. 2009, 78:1001-1010.
96. Patterson E.M., Mann J. Ecological conditions that favor tool use and innovation in wild bottlenose dolphins (Tursiops sp.). PLoS One 2011, 6:e22243.
97. Rawlins D.R., Handasyde K.A. The feeding ecology of the striped possum Dactylopsila trivirgata (Marsupialia: Petauridae) in far north Queensland. Aust. J. Zool. 2002, 257:195-206.
98. Richerson P.J., Boyd R. Not by Genes Alone: How Culture Transformed Human Evolution 2006, University of Chicago Press, Chicago.
99. Rowley I. The genus Corvus (Aves: Corvidae) in Australia. CSIRO Wildl. Res. 1970, 15:27-71.
100. Rutledge R., Hunt G.R. Lateralized tool use in wild New Caledonian crows. Anim. Behav. 2004, 67:327-332.
101. Rutz C., Bluff L.A. Animal-borne imaging takes wing, or the dawn of 'wildlife video-tracking'. Trends Ecol. Evol. 2008, 23:292-294.
102. Rutz C., Bluff L.A., Reed N., Troscianko J., Newton J., Inger R., Kacelnik A., Bearhop S. The ecological significance of tool use in New Caledonian crows. Science 2010, 329:1523-1526.
103. Rutz C., Bluff L.A., Weir A.A.S., Kacelnik A. Video cameras on wild birds. Science 2007, 318:765.
104. Sæther B.E. Pattern of covariation between life-history traits of European birds. Nature 1988, 331:616-617.
105. Seed A., Emery N., Clayton N. Intelligence in corvids and apes: a case of convergent evolution?. Ethology 2009, 115:401-420.
106. Shettleworth S.J. Animal cognition: deconstructing avian insight. Curr. Biol. 2009, 19:R1039-R1040.
107. Shumaker R.W., Walkup K.R., Beck B.B. Animal Tool Behavior: The Use and Manufacture of Tools by Animals 2011, Johns Hopkins University Press, Baltimore.
108. Smith A.C. Flora Vitiensis Nova: A New Flora of Fiji (Spermatophytes Only) 1981, Pacific Tropical Botanical Garden, Lawai, Hawaii.
109. Spaggiari, J., Chartendrault, V., Barré, N., 2007. Zones Importantes pour la Conversation des Oiseaux de Nouvelle-Calédonie. Société Calédonienne d'Ornithologie (SCO) et BirdLife International, Nouméa, Nouvelle-Calédonie.
110. Spriggs M. The Lapita culture and Austronesian prehistory in Oceania. The Austronesians: Historical and Cultural Perspectives 1995, Australian National University E-Press, Canberra. P. Bellwood, J.J. Fox, D. Tryon (Eds.).
111. St Amant R., Horton T.E. Revisiting the definition of tool use. Anim. Behav. 2008, 75:1199-1208.
112. Stearns S.C. The Evolution of Life Histories 2002, Oxford University Press, New York.
113. Stevenson J. Human impact from the paleoenvironmental record on New Caledonia. The Pacific from 5000 to 2000 Bp: Colonisation and Transformations 1999, IRD, Paris. J.C. Galipaud, I. Lilley (Eds.).
114. Stevenson J. A late-Holocene record of human impact from the southwest coast of New Caledonia. Holocene 2004, 14:888-898.
115. Stevenson J., Hope G. A comparison of late Quaternary forest changes in New Caledonia and northeastern Australia. Quatern. Res. 2005, 64:372-383.
116. Taylor, A.H., Hunt, G.R., Gray, R.D. Context-dependent tool use in New Caledonian crows. Biol. Lett., in press.
117. Taylor A.H., Hunt G.R., Holzhaider J.C., Gray R.D. Spontaneous metatool use by New Caledonian crows. Curr. Biol. 2007, 17:1504-1507.
118. Tebbich S., Taborsky M., Fessl B., Blomqvist D. Do woodpecker finches acquire tool-use by social learning?. Proc. R. Soc. B 2001, 268:2189-2193.
119. Tebbich S., Taborsky M., Fessl B., Dvorak M. The ecology of tool-use in the woodpecker finch (Cactospiza pallida). Ecol. Lett. 2002, 5:656-664.
120. Tebbich S., Sterelny K., Teschke I. The tale of the finch: adaptive radiation and behavioural flexibility. Philos. Trans. R. Soc. B 2010, 365:1099-1109.
121. Teschke I., Cartmill E., Stankewitz S., Tebbich S. Sometimes tool-use is not the key: no evidence for cognitive adaptive specializations in tool-using woodpecker finches. Anim. Behav. 2011, 82:945-956.
122. Tinbergen N. On aims and methods of ethology. Z. Tierpsychol. 1963, 20:410-433.
123. Troscianko J., Bluff L.A., Rutz C. Grass-stem tool use in New Caledonian Crows Corvus moneduloides. Ardea 2008, 96:283-285.
124. van Schaik C.P., Deaner R.O., Merrill M.Y. The conditions for tool use in primates: implications for the evolution of material culture. J. Hum. Evol. 1999, 36:719-741.
125. von Bayern A.M.P., Heathcote R.J.P., Rutz C., Kacelnik A. The role of experience in problem solving and innovative tool use in crows. Curr. Biol. 2009, 19:1965-1968.
126. Vuilleumier F., Gochfeld M. Notes sur l'avifaune de Nouvelle-Calédonie. Alauda 1976, 44:237-273.
127. Walter, A., Sam, C., 2002. Traditional Arboriculture in Oceania. Fruits of Oceania. ACIAR Monograph no. 85, Canberra.
128. Weber B., Depew D. Evolution and Learning: The Baldwin Effect Reconsidered 2003, MIT Press, Cambridge, MA.
129. Weir A.A.S., Chappell J., Kacelnik A. Shaping of hooks in New Caledonian crows. Science 2002, 297:981.
130. Weir A.A.S., Kacelnik A. A New Caledonian crow (Corvus moneduloides) creatively re-designs tools by bending or unbending aluminium strips. Anim. Cogn. 2006, 9:317-334.
131. Weir A.A.S., Kenward B., Chappell J., Kacelnik A. Lateralisation of tool use in New Caledonian Crows (Corvus moneduloides). Proc. R. Soc. Lond. B (Suppl.) 2004, 271:S344-S346.
132. West-Eberhard J. Developmental Plasticity and Evolution 2003, Oxford University Press, Oxford.
133. Wimpenny J.H., Weir A.A.S., Clayton L., Rutz C., Kacelnik A. Cognitive processes associated with sequential tool use in New Caledonian crows. PLoS One 2009, 4:e6471.
134. Wimpenny J.H., Weir A.A.S., Kacelnik A. New Caledonian crows use tools for non-foraging activities. Anim. Cogn. 2011, 14:459-464.
135. Yamagishi S., Eguchi K. Comparative foraging ecology of Madagascar vangids (Vangidae). Ibis 1996, 138:283-290.
136. Yamakoshi G. Dietary responses to fruit scarcity of wild chimpanzees at Bossou, Guinea: possible implications for ecological importance of tool use. Am. J. Phys. Anthropol. 1998, 106:283-295.