Shaping of Hooks in New Caledonian Crows

By Alex A. S. Weir, Jackie Chappell, Alex Kacelnik. Science, 2002

597 citations recorded by the source corpus.

Subfields: Cognitive Neuroscience, Developmental Biology, Social Psychology

View Paper: https://www.semanticscholar.org/paper/1736f70e744a5da30856b2a6efcdc4573fbf6f52

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Citations in the corpus

Working‐Memory Capacity and the Evolution of Modern Cognitive Potential (2010, background): “…of Modern Cognitive Potential S157 ufacture with regard to raw material and production techniques, ranging from shaping of hooks out of twigs (Hunt and Gray 2004) and ripping off sections of barbed Pandanus leaves (Hunt and Gray 2003) to bending wire into hooks (Weir, Chappell, and Kacelnik 2002).”
Revisiting the definition of animal tool use (2008, background): “A bird (e.g. a Caledonian crow; Weir et al. 2002) finds or fashions a hook, dips it into the tube, catches the handle with the hook, and pulls up the bucket holding the reward.”
Cooperative problem solving in a social carnivore (2009, unknown): “…performance of these same skills by nonprimates, including, for instance, teaching in meerkats (Thornton & McAuliffe 2006), culture in cetaceans (Noad et al. 2000; Rendall & Whitehead 2001), tool use in corvids (Hunt 1999; Weir et al. 2002) and transitive inference in fish (Grosenick et al. 2007).”
Dark, Beyond Deep: A Paradigm Shift to Cognitive AI with Humanlike Common Sense (2020, background): “[256] reported that New Caledonian crows can bend a piece of straight wire into a hook and use it to lift a bucket containing food from a vertical pipe.”
Mate choice for cognitive traits: a review of the evidence in nonhuman vertebrates (2011, methodology): “2000) and show the most technically advanced foraging behaviors (Weir et al. 2002; Kenward et al. 2005; Huber and Gajdon 2006; Taylor et al. 2007; Bird and Emery 2009; Schloegl et al. 2009; Schuck-Paim et al. 2009).”
Individual variation in spontaneous problem-solving performance among wild great tits (2011, background): “…that the large sample sizes needed for the study of individual variation are often difficult to obtain, especially for cognitive traits, the measurement of which commonly requires extensive subject training or repeated trials (e.g. Weir et al. 2002; Tebbich & Bshary 2004; Heinrich & Bugnyar 2005).”
Nonhuman Species’ Reactions to Inequity and their Implications for Fairness (2006, background): “Research on birds, particularly ravens and other corvids, some species of crows, and parrots, have yielded reports of cognition and complex social behavior that seem at least equivalent to that of primates (Pepperberg, 2002; Weir et al., 2002), and morality is no exception.”
'Obsessed with goals': functions and mechanisms of teleological interpretation of actions in humans. (2007, background): “Additionally, despite the ample evidence for tool use in primates (Boesch & Boesch, 1993) and birds ( Weir, Chappel, & Kacelnik, 2002 ), there is no indication that individuals of any of these species would conceptualize the objects they use as tools as possessing permanent functions that would be r”
Automated Planning and Acting (2016, background): “1 have been observed and studied from the viewpoint of how deliberative capabilities are developed, in species of corvids such as crows [597] or rooks [71, 70].”
Development of tool use in New Caledonian crows: inherited action patterns and social influences (2006, background): “…forms of goal-directed control, such as learning the relation between holes of certain depths and diameters and twigs of appropriate dimensions, which leads to the known ability of adults to select and modify tools for specific circumstances (Chappell & Kacelnik 2002, 2004; Weir et al. 2002).”
Through animal eyes: What behaviour tells us (2006, background): “…have a great deal of impressive evidence of the cognitive abilities of various species of animals (Byrne, 1995; Hauser, 2000; Griffin and Speck, 2004; Emery and Clayton, 2004) ranging from using tools (Weir et al., 2002) to recognizing themselves in mirrors (Gallup, 1970; Povinelli et al., 1997).”
Comparing the Complex Cognition of Birds and Primates (2004, background): “Most intriguingly, a New Caledonian crow has demonstrated the ability to modify an unnatural material, bending a straight piece of metal wire to form a hook at one end that was subsequently used to pull up a cup containing food (Weir, Chappell, and Kacelnik, 2002).”
Cognitive abilities related to tool use in the woodpecker finch, Cactospiza pallida (2004, background): “…wads to paint their bower (Chaffer 1945); and New Caledonian crows, Corvus moneduloides, make and use at least three forms of tools to aid prey capture (Hunt 1996), and even manufacture hooks from wire to solve a specific task, exceeding even nonhuman primates with this ability (Weir et al. 2002).”
Social cognition by food-caching corvids. The western scrub-jay as a natural psychologist (2007, background): “Even more intriguingly, Weir et al. (2002) have shown that these crows can manipulate novel man-made objects to solve a problem.”
Copying and Evolution of Neuronal Topology (2008, background): “Considerable attention has been paid recently to the capacity of animals such as New Caledonian crows [90], rats [91], non-human apes [91], children [92] and human adults [92] to undertake causal reasoning tasks, i.”