Beach-foraging Behaviour of Forest Ravens Corvus tasmanicus and an Australian Magpie Gymnorhina tibicen at Wilsons Promontory, Victoria
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Audition and Hemispheric Specialization in Songbirds and New Evidence from Australian Magpies
The neural processes of bird song and song development have become a model for research relevant to human acquisition of language, but in fact, very few avian species have been tested for lateralization of the way in which their audio-vocal system is engaged in perception, motor output and cognition. Moreover, the models that have been developed have been premised on birds with strong vocal dim...
متن کاملStability of referential signalling across time and locations: testing alarm calls of Australian magpies (Gymnorhina tibicen) in urban and rural Australia and in Fiji
In many avian species, vocal repertoire expands and changes throughout life as new syllables are added and sounds adapted to neighbours and circumstances. Referential signals, on the other hand, demand stability and lack of variation so that their meaning can be understood by conspecifics at all times. It is not known how stable such signals may be when the context is changed entirely but the p...
متن کاملAlarm Calls of the Australian Magpie (Gymnorhina tibicen): Predators Elicit Complex Vocal Responses and Mobbing Behaviour
Mobbing calls are produced by many avian species as part of a defence strategy against predators. However, as most studies have described small prey species, little is known of mobbing by species large enough to inflict harm on the predator when working cooperatively. We investigated the mobbing calls of the Australian magpie (Gymnorhina tibicen tibicen), a large, territorial songbird known to ...
متن کامل“Vicious, Aggressive Bird Stalks Cyclist”: The Australian Magpie (Cracticus tibicen) in the News
The Australian Magpie ( Cracticus tibicen ) is a common bird found in urban Australian environments where its nest defense behavior during spring brings it into conflict with humans. This article explores the role of print media in covering this conflict. Leximancer software was used to analyze newspaper reports about the Australian Magpie from a sample of 634 news stories, letters-to-the edito...
متن کاملBehavioural and Ecological Keys to Urban Colonization by Little Ravens (Corvus mellori)
Avian urban colonization is thought to be facilitated by a capacity for innovative feeding, ecological generalism and social foraging. However, the relative importance in exploiting urban resources and avoiding urban predators of being inherently ‘pre-adapted’ to the urban environment or adjusting to it through phenotypic plasticity requires more examination. These issues were explored in a nat...
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تاریخ انتشار 2003