Rutz, Christian; Lucas A. Bluff; Nicola Reed; Jolyon Troscianko; Jason Newton; Richard Inger; Alex Kacelnik; Stuart Bearhop (17 September 2010). "The Ecological Significance of Tool Use in New Caledonian Crows". Science. 329 (5998): 1523–1526. Bibcode:2010Sci...329.1523R. doi:10.1126/science.1192053. PMID20847272. S2CID8888382.
Rutz, Christian; Lucas A. Bluff; Nicola Reed; Jolyon Troscianko; Jason Newton; Richard Inger; Alex Kacelnik; Stuart Bearhop (17 September 2010). "The Ecological Significance of Tool Use in New Caledonian Crows". Science. 329 (5998): 1523–1526. Bibcode:2010Sci...329.1523R. doi:10.1126/science.1192053. PMID20847272. S2CID8888382.
Rutz, Christian; Lucas A. Bluff; Nicola Reed; Jolyon Troscianko; Jason Newton; Richard Inger; Alex Kacelnik; Stuart Bearhop (17 September 2010). "The Ecological Significance of Tool Use in New Caledonian Crows". Science. 329 (5998): 1523–1526. Bibcode:2010Sci...329.1523R. doi:10.1126/science.1192053. PMID20847272. S2CID8888382.
Rutz, Christian; Lucas A. Bluff; Nicola Reed; Jolyon Troscianko; Jason Newton; Richard Inger; Alex Kacelnik; Stuart Bearhop (17 September 2010). "The Ecological Significance of Tool Use in New Caledonian Crows". Science. 329 (5998): 1523–1526. Bibcode:2010Sci...329.1523R. doi:10.1126/science.1192053. PMID20847272. S2CID8888382.