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Browsing by Author "Barber, Colleen Anne, 1962-"
Now showing items 1-20 of 26
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(Halifax, N.S. : Saint Mary's University, 2014)Begging in passerine birds is an honest signal of nestling hunger to the parents. Over the breeding season a decrease in food availability and parental provisioning and an increase in parasite abundance occur suggestive ...
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(Halifax, N.S. : Saint Mary's University, 2016)Anthropogenic disturbances are known to induce stress in a variety of rban species. This study aims to determine if one particular disturbance, ambient urban noise, influences the stress levels of nestling European Starlings ...
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(Halifax, N.S. : Saint Mary's University, 2009)Spatial variation in nesting patterns can cause variation in population size estimates. This thesis research shows that more accurate estimates can be made of population sizes of breeding burrow-nesting seabirds by mapping ...
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(Halifax, N.S. : Saint Mary's University, 2016)One direct benefit of mating outside the pair bond for female passerine birds is to enlist the aid of neighboring males in communal activities such as nest defense. Female passerines are expected to be more heavily invested ...
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(Halifax, N.S. : Saint Mary's University, 2021)Females from a range of taxa prefer to mate with older males as they may gain direct and/or indirect benefits that younger males are unable to provide. Male birds commonly sing to attract mates and older males are able ...
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(Halifax, N.S. : Saint Mary's University, 2020)Most passerine species begin incubating their clutches once the penultimate egg is laid, allowing for asynchronous hatching of nestlings. This results in delayed development by 24 hours or more of the nestling hatching ...
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(Halifax, N.S. : Saint Mary's University, 2019)Parasites can impose fitness consequences onto their hosts by reducing their reproductive success or offspring survival rates. Carnus hemapterus are external parasites that feed on the blood of European Starling (Sturnus ...
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(Halifax, N.S. : Saint Mary's University, 2018)In parent-offspring interactions, nestlings signal their hunger to parents by begging. Parents typically respond by increasing their provisioning rate. This type of communication involves specific vocalizations, postures, ...
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(Halifax, N.S. : Saint Mary's University, 2017)Begging by nestling passerines is an important method of communicating to parents their state of hunger. I examined whether experimentally increased nestling begging in a brood can quickly alter parental provisioning rates ...
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(Halifax, N.S. : Saint Mary's University, 2018)Studies have shown that the most energetically costly event in a bird’s life cycle is that of breeding, particularly for females who lay nutrient-rich eggs. Studies also show that older males and females are often preferred ...
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(Halifax, N.S. : Saint Mary's University, 2021)Nestlings of most passerine species face many stressors including early exposure to ectoparasites. Ectoparasites negatively impact the health of nestlings by feeding on their blood and feathers, leaving the nestlings ...
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Drug overdose deaths in Halifax, Nova Scotia from 1996 to 2010 : a descriptive and comparative study (Halifax, N.S. : Saint Mary's University, 2013)Drug overdose death is an increasing concern in many areas of the world and many prevention programs exist to control these deaths. These include prescription monitoring programs, Naloxone treatment, safer injection ...
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The effect of ectoparasite load on the condition of nestling European starlings (Sturnus vulgaris) (Halifax, N.S. : Saint Mary`s University, 2022-04-28)Nest-dwelling ectoparasites are commonplace among-cavity nesting birds such as the European starling (Sturnus vulgaris), and can be detrimental to the health of nestlings. To determine if this was also the case for ...
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(Halifax, N.S. : Saint Mary's University, 2015)Climate change is an ongoing global phenomenon resulting in elevated temperatures and more intense rainfall events. These changes in temperature and rainfall have affected the breeding behaviour of many avian species. The ...
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(Halifax, N.S. : Saint Mary's University, 2016)Anthropogenic noise has had documented detrimental effects on animal health and communication within urban areas. Decreased fitness along with impaired nestling-parent communication have been detected in a few urban avian ...
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(Halifax, N.S. : Saint Mary's University, 2012)Plumage spectral characteristics are thought to play an essential role in mate choice. Male and female birds may benefit from mating outside of their social-pair bond if they obtain genetic benefits for their offspring by ...
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(Halifax, N.S. : Saint Mary's University, 2014)Avian egg mass and colouration have been correlated with female condition, in that eggs of greater mass and colouration intensity have been shown to have a positive relationship with female condition. Individuals that ...
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(Halifax, N.S. : Saint Mary's University, 2023-04-26)Every bird requires a mate to have a successful breeding attempt. After each brood, they are faced with the choice to stay with or separate from this mate. The choice to stay together is referred to as mate fidelity and ...
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(Halifax, N.S. : Saint Mary`s University, 2022-04-11)Avian nests provide critical shelter for offspring and differ in structure according to the species. They typically consist of natural materials such as dried grass, feathers from other species, and anthropogenic materials ...
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(Halifax, N.S. : Saint Mary's University, 2018)Nestlings vocalize while begging to elicit food from parents, and although many studies examine their begging behaviour, surprisingly little is known about vocal development in nestling passerines. European Starlings ...
Now showing items 1-20 of 26