Sequential Tool Use in the New Caledonian Crow

2006 ◽  
Author(s):  
Joanna Wimpenny ◽  
Alex A. S. Weir ◽  
Alex Kacelnik
Keyword(s):  
Tool Use ◽  
New Caledonian Crow ◽  
Caledonian Crow

scholarly journals Is primate tool use special? Chimpanzee and New Caledonian crow compared

2013 ◽  
Vol 368 (1630) ◽  
pp. 20120422 ◽  
Author(s):  
W. C. McGrew
Keyword(s):  
Material Culture ◽  
Pan Troglodytes ◽  
Tool Use ◽  
Field Research ◽  
Extractive Foraging ◽  
New Caledonian Crow ◽  
Elementary Technology ◽  
Caledonian Crow ◽  
Sustained Field ◽  
Corvus Moneduloides

The chimpanzee ( Pan troglodytes ) is well-known in both nature and captivity as an impressive maker and user of tools, but recently the New Caledonian crow ( Corvus moneduloides ) has been championed as being equivalent or superior to the ape in elementary technology. I systematically compare the two taxa, going beyond simple presence/absence scoring of tool-using and -making types, on four more precise aspects of material culture: (i) types of associative technology (tools used in combination); (ii) modes of tool making; (iii) modes of tool use; and (iv) functions of tool use. I emphasize tool use in nature, when performance is habitual or customary, rather than in anecdotal or idiosyncratic. On all four measures, the ape shows more variety than does the corvid, especially in modes and functions that go beyond extractive foraging. However, more sustained field research is required on the crows before this contrast is conclusive.

scholarly journals Population Genetic Structure and Colonisation History of the Tool-Using New Caledonian Crow

PLoS ONE ◽  
2012 ◽  
Vol 7 (5) ◽  
pp. e36608 ◽  
Author(s):  
Jawad Abdelkrim ◽  
Gavin R. Hunt ◽  
Russell D. Gray ◽  
Neil J. Gemmell
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
New Caledonian Crow ◽  
Caledonian Crow ◽  
History Of

scholarly journals Modifications to the Aesop's Fable Paradigm Change New Caledonian Crow Performances

PLoS ONE ◽  
2014 ◽  
Vol 9 (7) ◽  
pp. e103049 ◽  
Author(s):  
Corina J. Logan ◽  
Sarah A. Jelbert ◽  
Alexis J. Breen ◽  
Russell D. Gray ◽  
Alex H. Taylor
Keyword(s):  
Paradigm Change ◽  
New Caledonian Crow ◽  
Caledonian Crow

scholarly journals Tool bending in New Caledonian crows

2016 ◽  
Vol 3 (8) ◽  
pp. 160439 ◽  
Author(s):  
Christian Rutz ◽  
Shoko Sugasawa ◽  
Jessica E. M. van der Wal ◽  
Barbara C. Klump ◽  
James J. H. St Clair
Keyword(s):  
Natural History ◽  
Field Experiments ◽  
Cognitive Capacities ◽  
New Caledonian Crow ◽  
The World ◽  
Caledonian Crow ◽  
New Caledonian Crows ◽  
Behavioural Repertoire

‘Betty’ the New Caledonian crow astonished the world when she ‘spontaneously’ bent straight pieces of garden wire into hooked foraging tools. Recent field experiments have revealed that tool bending is part of the species' natural behavioural repertoire, providing important context for interpreting Betty's iconic wire-bending feat. More generally, this discovery provides a compelling illustration of how natural history observations can inform laboratory-based research into the cognitive capacities of non-human animals.

Notes on the biology of the threatened Island Thrush Turdus poliocephalus xanthopus in New Caledonia

2019 ◽  
Vol 29 (4) ◽  
pp. 616-626
Author(s):  
PASCAL VILLARD ◽  
THOMAS DUVAL ◽  
CHRISTIAN PAPINEAU ◽  
JEAN-JÉRÔME CASSAN ◽  
JÉRÔME FUCHS
Keyword(s):  
New Caledonia ◽  
Rattus Rattus ◽  
Coastal Forest ◽  
Significant Component ◽  
Predator Species ◽  
Black Rat ◽  
New Caledonian Crow ◽  
Caledonian Crow ◽  
Nest Predator ◽  
Corvus Moneduloides

SummaryThree subspecies of Island Thrush Turdus poliocephalus were historically found in New Caledonia. All these subspecies were considered extinct until 1978, when T. p. xanthopus was rediscovered on two small islands, Néba (∼ 3.5 km2) and Yandé (∼ 13 km2). On Néba, we estimated the population at 44–58 individuals. This Island Thrush population is dependent on the coastal forest, the richest habitat for invertebrates. However, the coastal forest habitat has been degraded in quality and extent. The Island Thrush forages in the litter by removing leaves with its bill. Fruits (diameter < 10 mm), picked from trees and swallowed whole, are also a significant component of its diet. Néba and Yandé are currently free of two nest predator species, the black rat Rattus rattus and the New Caledonian Crow Corvus moneduloides. On Néba, a low breeding success rate of 15.4% was found. To ensure conservation of these relict thrush populations, two actions at least should be implemented: setting up a biosecurity programme to keep islands free of black rats and increasing the area of coastal forest. The latter could be done by cutting down coconut trees in abandoned groves and planting tree species used by the Island Thrush to provide shade, fruits, good leaf litter, and nest support.

Sign in / Sign up

Export Citation Format

Share Document