Intraspecific recognition by laughing gull chicks
Article Abstract:
Naive laughing gulls chicks, Larus atricilla, prefer to peck at models of herring gull rather than models of their own species. The chicks favor unusual laughing gull models and learn to recognize them by reinforcement-based conditioning such as feeding. This preference suggest intraspecific visual and auditory learning of laughing gulls chicks. The predominance of auditory learning is confirmed by the ability of the chicks to recognize the mew call but not the visual model used during feeding and testing.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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The hawk/goose experiment: sources of variability
Article Abstract:
Ducklings respond more strongly to moving hawk silhouettes than they do to moving goose shapes. Rearing and testing condition are crucial in mediating the response. The level of response decreases with the increasing number of stimuli. Response habituation is more rapid for goose silhouette in comparison to those of hawks. Group-reared ducklings respond by crouching, whereas individually reared birds respond by calling and running.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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Adoption of chicks and the level of relatedness in common gull, Larus canus, colonies: DNA fingerprinting analyses
Article Abstract:
The degree of genetic relatedness in adopted chicks and foster parents in colonies of the common gull was tested. Results indicate that kin groups of neighbours do occur in common gull colonies and such social structure may result in indirect inclusive fitness benefits of adopting pairs. Kin altruism should be considered as a factor in adoptions.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2000
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