Crocodilians use tools for hunting

@article{Dinets2015CrocodiliansUT,
  title={Crocodilians use tools for hunting},
  author={Vladimir Dinets and J. C. Brueggen and John D. Brueggen},
  journal={Ethology Ecology \& Evolution},
  year={2015},
  volume={27},
  pages={74 - 78}
}
Using objects as hunting lures is very rare in nature, having been observed in just a handful of species. We report the use of twigs and sticks as bird lures by two crocodilian species. At least one of them uses this method predominantly during the nest-building season of its prey. This is the first known case of a predator not just using objects as lures, but also taking into account the seasonality of prey behavior. It provides a surprising insight into previously unrecognized complexity of… Expand
An experimental test of crocodilian stick-displaying behavior
TLDR
The hypothesis that crocodilians are true tool users is called into question after it was found that in most comparisons the frequency of stick-displaying behavior did not differ between rookery and no-rookery sites, while in one comparison the alligators at a no- rookery site actually displayed the behavior more frequently than a paired rookery site. Expand
Surveying death roll behavior across Crocodylia
TLDR
The patterns of death roll behavior observed suggest that this behaviour is not novel to any one crocodylian clade, morphotype, or dietary niche, and the prevalence of death rolling behaviour across Crocodylia in response to perceived threats indicates that it is not solely, or maybe even primarily, a feeding behaviour, but is also utilised during inter- and intra-specific conflict as a means to escape or injure an opponent. Expand
Uso de fezes para atrair insetos por um besourinho-de-bico-vermelho, Chlorostilbon lucidus (Apodiformes: Trochilidae)
This study describes the occurrence of a female Glittering-bellied Emerald, Chlorostilbon lucidus , using feces to attract insects to the nesting site for predation. This is the first report of aExpand
Turtles Are Not Just Walking Stones: Conspicuous Coloration and Sexual Selection in Freshwater Turtles
TLDR
It is found that absence of aggressive mating behavior is statistically associated with the presence of conspicuous coloration on turtles’ heads, and it seems that while species with female- biased SSD are characterised by conspicuously colored head ornaments, in species with male-biased SSD conspicuouscoloration is absent. Expand
Reptiles, Biodiversity of
TLDR
The life histories of most large species of turtles, lizards, snakes, and crocodilians depend on prolonged adult survival and reproduction, and it is unlikely that these species will long withstand the current rate of commercial exploitation. Expand
Size, sex and individual-level behaviour drive intrapopulation variation in cross-ecosystem foraging of a top-predator.
TLDR
The results demonstrate the importance of intrapopulation characteristics (body size, sex and individual specialization) as key determinants of the strength of predator-driven ecosystem connectivity resulting from cross-ecosystem foraging behaviours. Expand
Revisiting Russell’s troodontid: autecology, physiology, and speculative tool use
Dale Russell described the osteology, morphology, and ecology of the small theropod “Stenonychosaurus inequalis” in two papers, speculating on its life habits, brain power, vision, movement, feedin...
Direct and indirect interactions with vegetation shape crocodylian ecology at multiple scales
1CSIRO Land and Water, Floreat, Western Australia, Australia 2School of Biological Sciences, University of Western Australia, Crawley, Western Australia, Australia 3Queensland Parks and Wildlife,Expand
Unexpected behavior in the Cretaceous: tooth-marked bones attributable to tyrannosaur play
Attributing behavior in extinct animals is predicated on identification of anatomy or pathology analogous to that present and recognized in contemporary animals (Rothschild & Martin 2006). While Ta...
Neural Processes Underlying Tool Use in Humans, Macaques, and Corvids
TLDR
A possible neural network for tool use in macaques is suggested and it is hoped this might inspire research to discover a similar brain network in corvids and establish a framework to elucidate the neural mechanisms that supported the convergent evolution of toolUse in birds and mammals. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 13 REFERENCES
Crocodiles & alligators of the world
TLDR
The volumes provide clear, basic information on physiology, classification, habitat, life cycle, and behavior, including such diverse topics as courtship and mating, egg-laying and development, reproduction and parental care, food and feeding. Expand
Effects of aquatic habitat continuity on signal composition in crocodilians
TLDR
The ability of crocodilians to optimize their signalling to habitat parameters by adjusting signal composition might account for the evolutionary stability of their signalling systems, which are still very similar between crocodiles and alligators even after more than 70 million years of separation. Expand
Collective Vigilance in the Greater Kudu: Towards a Better Understanding of Synchronization Patterns
Collective detection of predators is one of the main advantages of living in groups in prey species. However, the mechanisms linking individual and collective vigilance remain largely unknown. Here,Expand
Animal Tool Behavior: The Use and Manufacture of Tools by Animals
TLDR
Through a comprehensive synthesis of the studies produced through 2010, the authors provide an updated and exact definition of tool use, identify new modes of use that have emerged in the literature, examine all forms of tool manufacture, and address common myths about non-human tool use. Expand
Death in the Everglades: The Murder of Guy Bradley, America's First Martyr to Environmentalism
"This is a fascinating account of the Florida plume hunters, the devastation they wrought, and the slow, painful progress--exemplified bravely on the hunting grounds by Guy Bradley--of the birdExpand
Breaking the Social–Non‐social Dichotomy: A Role for Reptiles in Vertebrate Social Behavior Research?
TLDR
The diversity and complexity of reptile social systems are highlighted, reasons for their historical neglect in research are reviewed, and how reptiles can contribute to the understanding of the evolution of vertebrate social behavior are indicated. Expand
Breaking the social - nonsocial dichotomy : a role for reptiles in vertebrate social behaviour research ?
  • Ethology
  • 2013
Breaking the social-nonsocial dichotomy: a role for reptiles in vertebrate social behaviour research
  • Ethology
  • 2013
Foreword, pp
  • ix–xi, In: Shumaker R.W. et al., Eds. Animal tool behavior: the use and manufacture of tools by animals. Baltimore, MD: The Johns Hopkins University Press.
  • 2011
...
1
2
...