The Hawaiian crow has been revealed as a skilled tool user, confirmed by testing the last members of this endangered species that survive in captivity. The finding suggests its behavior is tantalizingly similar to that of the famous tool-using New Caledonian crow and has implications for the evolution of tool use and intelligence in birds.
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http://dx.doi.org/10.3758/s13420-017-0262-5 | DOI Listing |
Commun Biol
January 2024
Paris-Saclay Institute of Neuroscience (NeuroPSI), Université Paris-Saclay, CNRS UMR9197, Saclay, 91400, France.
In mammals and birds, tool-using species are characterized by their relatively large telencephalon containing a higher proportion of total brain neurons compared to other species. Some teleost species in the wrasse family have evolved tool-using abilities. In this study, we compared the brains of tool-using wrasses with various teleost species.
View Article and Find Full Text PDFCurr Biol
January 2024
ICREA, Pg. Lluís Companys 23, Barcelona, Spain; Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain; School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand; School of Psychology, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand. Electronic address:
A new study shows a falcon species, the striated caracara, displays similar levels of behavioural innovation to tool-using parrots when solving a battery test in the wild.
View Article and Find Full Text PDFCurr Biol
January 2024
Comparative Cognition Unit, Messerli Research Institute, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria.
Innovation (i.e., a new solution to a familiar problem, or applying an existing behavior to a novel problem) plays a fundamental role in species' ecology and evolution.
View Article and Find Full Text PDFProc Biol Sci
September 2023
Zoology and Ecology, Tropical Environments Sciences, James Cook University, Cairns, Queensland 4878, Australia.
The rarity of tool manufacture in wild parrots is surprising because they share key life-history traits with advanced tool-using species, including large brains, complex sociality and prolonged parental care. When it does occur, tool manufacture in parrots tends to be innovative, spontaneous and individually variable, but most cases have been in captivity. In the wild, only palm cockatoos () have been observed using tools regularly.
View Article and Find Full Text PDFJ Environ Manage
November 2023
CEFE, Univ Montpellier, CNRS, EPHE-PSL University, IRD, Montpellier, France.
Quantifying the demographic impact of anthropogenic fatalities on animal populations is a key component of wildlife conservation. However, such quantification remains rare in environmental impact assessments (EIA) of large-infrastructure projects, partly because of the complexity of implementing demographic models. Providing user-friendly demographic tools is thus an important step to fill this gap.
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