The effect of frustrative nonreward on vocalisations and behaviour in the laying hen, Gallus gallus domesticus.

@article{Zimmerman1998TheEO,
  title={The effect of frustrative nonreward on vocalisations and behaviour in the laying hen, Gallus gallus domesticus.},
  author={Patrick H. Zimmerman and Paul Koene},
  journal={Behavioural processes},
  year={1998},
  volume={44 1},
  pages={73-9}
}
Laying hens are thought to express an expectation of a rewarding event through a specific vocalisation, the gakel-call. It has been suggested that the gakel-call is related to frustration, i.e. the thwarting of behaviour. We investigated if frustrative nonreward (nonreinforcement in a situation that previously was consistently reinforcing) in laying hens is expressed through this gakel-call. Twenty hens of two commercial strains, ten ISA White Leghorn and ten ISA Brown Warren were subjected to… CONTINUE READING

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