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Skip to Search Results- 5Sturdy, Christopher B.
- 4Bayne, Erin
- 3Campbell, Kimberley A.
- 3Neil McMillan
- 2Allison H. Hahn
- 2Christopher B. Sturdy
- 19Graduate and Postdoctoral Studies (GPS), Faculty of
- 19Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 7WISEST Summer Research Program
- 7WISEST Summer Research Program/WISEST Research Posters
- 4Psychology, Department of
- 4Psychology, Department of/Journal Articles (Psychology)
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2016-01-01
Jenna V. Congdon, Allison H. Hahn, Neil McMillan, Marc T. Avey, Christopher B. Sturdy
Chickadees produce many vocalizations, including chick-a-dee calls which they use as a mobbing call in the presence of predators. Previous research has shown that chickadees produce more D notes in their mobbing calls in response to high-threat predators compared to low-threat predators, and may...
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Discrimination of musical intervals by humans and chickadees: Cue salience modulated by timbre
DownloadFall 2013
Musical consonance/dissonance, roughly defined by its characteristic stability/instability, has been shown to be a relatively salient feature of sound. The extent to which the salience of this property varies as a function of timbre, a property that distinguishes two sounds of the same pitch and...
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Spring 2020
Animals must assess the risk of mortality due to starvation or predation when making foraging decisions. This decision-making can be guided by cues from the environment, conspecifics, heterospecifics, or by predators themselves. Information theory predicts that high certainty cues should be...
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Information contained within a simple acoustic signal: The fee-bee song of the black-capped chickadee (Poecile atricapillus)
DownloadFall 2015
Black-capped chickadees (Poecile atricapillus) are a common North American songbird that produce numerous types of vocalizations with various functions. The vocal repertoire of black-capped chickadees have been the focus of numerous vocal production and perception studies. Black-capped chickadees...
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Investigating the value of incorporating behavioural measures in a discriminant function developed for sex assignment in black-capped chickadees (Poecile atricapillus)
DownloadFall 2021
Black-capped chickadees (Poecile atricapillus) are a sexually monomorphic species that typically require molecular assays or observation of sex-specific behaviours in the breeding season for accurate sex assignment. We developed a discriminant function in a central Albertan chickadee population...
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Fall 2010
Urbanization is viewed as a major threat to global biodiversity because of its role in the loss and fragmentation of low-lying, productive habitats associated with coastal plains and river valleys. My study examines the effects of urbanization on the movements and distribution of songbirds in...
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2016-01-01
Christopher B. Sturdy, Erin N. Scully, Allison H. Hahn, Neil McMillan, Jenna V. Congdon, Kimberley A. Campbell
Category perception, as Herrnstein (1990) defined it, is a powerful and pervasive cognitive ability possessed by every species in which it has been adequately tested. We have studied category perception of vocal communication signals in songbirds for over 20 years. Our first studies provided us...
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Pitch perception in vocal learners: Fundamental shared components of pitch processing and biological relevance
DownloadSpring 2013
Pitch perception is important in both music and language perception in humans. Vocal learners, including humans, share the property of learning their vocalizations from a tutor when young. Similar behavioural and neural mechanisms underlying vocal production among different species of vocal...
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Pitch perception is not unitary: Evidence for the perception of pitch chroma in black-capped chickadees.
DownloadFall 2015
Pitch perception is mediated by two attributes: pitch height and pitch chroma. These two attributes can be pitted against one another during an octave equivalence task in order to clarify the dominant perceptual mechanism. Pitch chroma mediates the perceptual phenomenon of octave equivalence,...