Tonic Immobility Responses of Herring Gull Chicks
نویسندگان
چکیده
منابع مشابه
Brightness dependence of colour preferences in herring gull chicks.
Since the classic study by TINBERGEN and PERDECK (1950) of the colour preferences of gull chicks reacting with the begging response to models of the parental beak, much has been published on spontaneous behavioural colour preferences of birds (e. g. CURTlUS 1954; HESS 1956; TINBERGEN et al. 1962; KEAR 1964; QUINE and CULLEN 1964; HAILMAN 1967; OPPENHEIM 1968; DELlUS 1968). Several aspects of th...
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INTRODUCTION Tonic immobility (TI) is fear-induced freezing that animals may undergo when confronted by a threat. It is principally observed in prey species as defence mechanisms. In our preliminary research, we detected large inter-individual variations in the frequency and duration of freezing behavior among newly hatched domestic chicks (Gallus gallus). In this study we aim to identify the c...
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RESEARCH in avian migratory orientation has centered on the environmental stimuli that may serve as cues (see Adler 1970, Bellrose 1972, Emlen 1975). Most such studies have dealt primarily with long-distance migrants or trained homing pigeons (Columba livia) (Keeton 1974). Few experiments have explored the orientation mechanism(s) of nonmigrants, partial, or short-distance migrants. As Bellrose...
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Tonic immobility is a basic defense strategy which has not been studied in depth in humans. Data suggest that it may be a relatively frequent phenomenon in victims of rape and sexual abuse, but its occurrence has not been systematically explored in other types of trauma. We carried out a retrospective study in a sample of 100 university students to establish whether tonic immobility varies depe...
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Título: Predictores de la inmovilidad tónica ante eventos traumáticos. Resumen: La inmovilidad tónica (IT) es una posible reacción ante el peligro que es facilitada por el miedo intenso, la restricción física y la incapacidad percibida de escapar. Otras variables que podrían influir, tales como el tipo de eventos traumáticos, características de los mismos y características personales han sido p...
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ژورنال
عنوان ژورنال: The Condor
سال: 1978
ISSN: 0010-5422
DOI: 10.2307/1367931