Publications

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calvarial osteosarcoma with cerebral compression in a free-ranging powerful owl (ninox strenua).a free-ranging powerful owl (ninox strenua) presented in a dull state with extensive bruising of the skin overlying the skull, due to suspected trauma. supportive care was provided, which resulted in the return to a normal state, although intermittent subtle neurologic abnormalities remained. one month from original presentation, intermittent episodes of head turning and a possible seizure were noted, but behavior and appetite were otherwise normal. the owl was referred to taronga wildlife hospi ...201728363071
prevalence of columbid herpesvirus infection in feral pigeons (columba livia) from new south wales and victoria, australia, with spillover into a wild powerful owl (ninox struena).columbid herpesvirus-1 (cohv-1) is widespread in feral pigeons ( columba livia ) in north america and europe. we used a pcr assay to detect cohv-1 dna in oral and cloacal tissues and oral swabs from naturally infected pigeons. fifty-three feral pigeons from five flocks in australia (n=3 from south-central victoria and n=2 from sydney) were examined for cohv-1 dna. we detected cohv-1 dna in oral mucosa and cloacal mucosa, with higher concentrations in the oral mucosa. the sensitivity of testing o ...201728192040
fatal columbid herpesvirus-1 infections in three species of australian birds of prey.we document columbid herpesvirus-1 (cohv-1) infection in two barking owls (ninox connivens), a powerful owl (ninox strenua) and an australian hobby (falco longipennis). antemortem signs of infection were non-specific and the birds either died soon after they were identified as ill or were found dead unexpectedly. gross postmortem findings were also not specific. microscopically, marked to massive splenic and hepatic necrosis with the presence of eosinophilic inclusion bodies in remaining splenoc ...201121495992
integrating the costs of plant toxins and predation risk in foraging decisions of a mammalian herbivore.foraging herbivores must satisfy their nutrient requirements in a world of toxic plants while also avoiding predators. plant toxins and perceived predation risk at food patches should both reduce patch residency time, but the relative strengths of these factors on feeding decisions has rarely been quantified. using an arboreal generalist herbivore, the common brushtail possum trichosurus vulpecula, we tested the effects on food intake of the plant toxin, cineole, and regurgitated pellets from on ...201020652597
optimizing the use of shed feathers for genetic analysis.shed feathers obtained by noninvasive genetic sampling (ngs) are a valuable source of dna for genetic studies of birds. they can be collected across a large geographical range and facilitate research on species that would otherwise be extremely difficult to study. a limitation of this approach is uncertainty concerning the quality of the extracted dna. here we investigate the relationship between feather type, feather condition and dna quality (amplification success) in order to provide a simple ...200821585833
effects of avian mobbing on roost use and diet of powerful owls, ninox strenuawe observed the species and numbers of mobbing birds and their effects on a large, nocturnal, bird-eating predator, the powerful owl, together with the pattern of owl predation on mobbing and non-mobbing species. owls were mobbed on 35 occasions by seven of 44 species of forest birds at a site composed of open forest (88% by area) and rainforest (12%). the majority of bouts involved individuals of a single species, although mixed groups were observed on nine occasions. regular mobbers were betwe ...19989480699
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