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Author (down) Emery, N.J.; Clayton, N.S. url  doi
openurl 
  Title The Mentality of Crows: Convergent Evolution of Intelligence in Corvids and Apes Type Journal Article
  Year 2004 Publication Science Abbreviated Journal Science  
  Volume 306 Issue 5703 Pages 1903-1907  
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  Abstract Discussions of the evolution of intelligence have focused on monkeys and apes because of their close evolutionary relationship to humans. Other large-brained social animals, such as corvids, also understand their physical and social worlds. Here we review recent studies of tool manufacture, mental time travel, and social cognition in corvids, and suggest that complex cognition depends on a “tool kit” consisting of causal reasoning, flexibility, imagination, and prospection. Because corvids and apes share these cognitive tools, we argue that complex cognitive abilities evolved multiple times in distantly related species with vastly different brain structures in order to solve similar socioecological problems.  
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  Notes 10.1126/science.1098410 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2959  
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Author (down) Clayton, N.S.; Dickinson, A. doi  openurl
  Title Episodic-like memory during cache recovery by scrub jays Type Journal Article
  Year 1998 Publication Abbreviated Journal Nature  
  Volume 395 Issue 6699 Pages 272-274  
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  Abstract The recollection of past experiences allows us to recall what a particular event was, and where and when it occurred1,2, a form of memory that is thought to be unique to humans3. It is known, however, that food-storing birds remember the spatial location4, 5, 6 and contents6, 7, 8, 9 of their caches. Furthermore, food-storing animals adapt their caching and recovery strategies to the perishability of food stores10, 11, 12, 13, which suggests that they are sensitive to temporal factors. Here we show that scrub jays (Aphelocoma coerulescens) remember 'when' food items are stored by allowing them to recover perishable 'wax worms' (wax-moth larvae) and non-perishable peanuts which they had previously cached in visuospatially distinct sites. Jays searched preferentially for fresh wax worms, their favoured food, when allowed to recover them shortly after caching. However, they rapidly learned to avoid searching for worms after a longer interval during which the worms had decayed. The recovery preference of jays demonstrates memory of where and when particular food items were cached, thereby fulfilling the behavioural criteria for episodic-like memory in non-human animals.  
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  ISSN 0028-0836 ISBN Medium  
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  Notes 10.1038/26216 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4788  
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Author (down) Clayton, N.S. url  openurl
  Title COGNITION: An Open Sandwich or an Open Question? Type Journal Article
  Year 2004 Publication Science Abbreviated Journal Science  
  Volume 305 Issue 5682 Pages 344-  
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  Notes 10.1126/science.1099512 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2955  
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Author (down) Amodio, P.; Boeckle, M.; Schnell, A.K.; Ostojic, L.; Fiorito, G.; Clayton, N.S. url  doi
openurl 
  Title Grow Smart and Die Young: Why Did Cephalopods Evolve Intelligence? Type Journal Article
  Year 2018 Publication Trends in Ecology & Evolution Abbreviated Journal Trends. Ecol. Evol.  
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  Abstract Intelligence in large-brained vertebrates might have evolved through independent, yet similar processes based on comparable socioecological pressures and slow life histories. This convergent evolutionary route, however, cannot explain why cephalopods developed large brains and flexible behavioural repertoires: cephalopods have fast life histories and live in simple social environments. Here, we suggest that the loss of the external shell in cephalopods (i) caused a dramatic increase in predatory pressure, which in turn prevented the emergence of slow life histories, and (ii) allowed the exploitation of novel challenging niches, thus favouring the emergence of intelligence. By highlighting convergent and divergent aspects between cephalopods and large-brained vertebrates we illustrate how the evolution of intelligence might not be constrained to a single evolutionary route.  
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  Publisher Elsevier Place of Publication Editor  
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  ISSN 0169-5347 ISBN Medium  
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  Notes doi: 10.1016/j.tree.2018.10.010 Approved no  
  Call Number Equine Behaviour @ team @ Serial 6508  
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