November 2012

Journal Club: Polly gets his own cracker: clever cockatoo manufactures, uses tools | video |

Thumbnail image for Journal Club: Polly gets his own cracker: clever cockatoo manufactures, uses tools | video | by Grrlscientist 21 November 2012

SUMMARY: Not known to manufacture or use tools in the wild, a captive cockatoo demonstrates that parrots can make tools to suit their needs.   If you’ve ever lived with a parrot, then you are well aware that they come with a built-in multi-purpose tool attached to their faces. For this reason, most parrots do [...]

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Journal Club: Sing for your supper: fairy-wren chicks must sing vocal password for food

Thumbnail image for Journal Club: Sing for your supper: fairy-wren chicks must sing vocal password for food by Grrlscientist 14 November 2012

SUMMARY: Female fairy-wrens teach their chicks a vocal password before they hatch to distinguish them from brood parasitic bronze-cuckoo chicks How do parents recognize their offspring when the cost of making an error is high? To avoid wasting valuable time and energy by raising chicks of another species that commonly sneaks eggs into its nest, [...]

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