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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of ornithology 105 (1964), S. 334-339 
    ISSN: 1439-0361
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary If redfooted and bluefaced boobies(Sula sula, S. dactylatra) in the Galapagos Islands are startled by the sudden and close appearance of man, they can only „take wing“ after unsuccessful panicky attempts at flying. Redfooted boobies, however, spotting man from afar are able to „take wing“ in the normal undisturbed manner. Fledged juveniles are capable of flying, and hence of fleeing, in every situation. This and other facts indicate that a rapid increase in fear from nearby ground predators causes an unbalance between the flying and fear drives; this leads to the possibly deleterious fligth panic.
    Notes: Zusammenfassung Rotfuß- und Maskentölpel(Sula sula, S. dactylatra) auf Galapagos, die den Menschen auf kurze Entfernung erblicken, vermögen erst nach erfolglosen Fluchtversuchen fliegend zu fliehen. Solche Rotfußtölpel, die ihn von weitem kommen sehen, fliehen glatt wie beim ungestörten Start aus eigenem Entschluß. Flugbare Jungvögel sind zahmer, und gerade sie können in jeder Situation starten. Dies und andere Tatsachen deuten an, daß unbalancierte Bodenfeindangst solche Fluchtmängel bedingt.
    Type of Medium: Electronic Resource
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