https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24012 Tue 13 Jul 2021 16:51:31 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33892 Tue 13 Jul 2021 14:52:44 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52207 Thu 05 Oct 2023 10:16:07 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:7543 Sat 24 Mar 2018 08:37:43 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:9719 Sat 24 Mar 2018 08:34:37 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20636 Sat 24 Mar 2018 07:55:47 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27211 Acridotheres tristis, has been linked to its ability to occupy opportunistically an ecological niche that most natives cannot, whereas the native noisy miner, Manorina melanocephala, owes its success to its ability to aggressively outcompete other avian species. Indian mynas were significantly more neophobic than noisy miners. Yet, when tested on a range of innovative foraging tasks, Indian mynas consistently outperformed noisy miners. The ability to use the beak in a greater range of ways, and more flexibly, was highly repeatable in Indian mynas, and underpinned their superior problem-solving performance. We discuss the results in the light of potential methodological influences, but also the idea that necessity may facilitate innovation not only in less competitive individuals, as is documented in the literature, but also in species with less competitive lifestyles.]]> Sat 24 Mar 2018 07:32:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27212 Acridotheres tristis, to innovate when alone, in pairs, or in groups of five birds. Although innovators remained consistent in their relative innovation performance ranking (high, medium, low), the presence of one or more conspecifics reduced the likelihood of innovating, and increased innovation latencies, significantly relative to when individuals were tested alone. A neophobia test in which latency to forage was compared in both the absence and the presence of a novel object, in each of two social contexts (solitary versus social), showed that the presence of conspecifics caused mynahs to forage significantly faster in a safe situation (object absent) relative to when alone, but to delay foraging in a risky situation (object present). Together, these findings suggest that sociality can have contrasting effects on foraging in safe and risky situations, and, in some species at least, effects of sociality on innovative foraging may hence be more akin to those observed in the presence of risk. Negotiation over engaging with risks inherent to innovative foraging offered the most likely explanation for socially inhibited innovation behaviour, and may act to constrain the diffusion of innovations under some conditions.]]> Sat 24 Mar 2018 07:32:26 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27814 Sat 24 Mar 2018 07:31:11 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51913 Fri 22 Sep 2023 10:39:52 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:40189 Acridotheres tristis. Here, we aimed to test the extent to which shared functional traits inform the intensity of aggression between cavity-nesting birds. We quantified the outcomes of aggressive interactions between birds in large hollow-bearing trees in SE Queensland, Australia. We examined whether more similarly sized birds interacted more frequently, whether larger species won aggressive interactions more often, and whether cavity-breeding species with similar preferences for nesting sites (breeding-niche space) interacted more frequently. We recorded a total of 410 aggressive interactions and 48 interacting bird species around tree hollows, including 20 cavity-nesting bird species. These interactions were dominated by the invasive common myna, the native noisy miner (a non-cavity-breeder) and the native rainbow lorikeet Trichoglossus moluccanus, but the common myna won the largest total number of interspecific interactions. On average, larger birds won aggressive interactions more frequently, yet there were some important exceptions to this finding; the common myna (113 ± 30 g) won 26 of the 29 interactions against the larger native rainbow lorikeet (126 ± 44 g). Importantly, species with more similar nest-site preferences were observed aggressively interacting more frequently. Synthesis and applications. The impact of the invasive common myna was higher-site preferences. Control efforts for the myna should focus on birds that nest in natural tree hollows. An analysis of shared traits by managers could be used to help identify how many local species would benefit from common myna control in a given area and test if further behavioural studies of common myna are warranted.]]> Fri 22 Jul 2022 14:02:27 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46141 Acridotheres tristis, one of the most widespread invasive birds in Australia and invasive to many other parts of the world, are learning to respond to anthropogenic predation. We analyzed behavior at an experimental food patch provisioned by 2 distinctly clothed persons both before and after mynas had observed one of the 2 persons seemingly capture conspecifics inside a trap placed at the food patch. After the demonstration, mynas landed in smaller numbers at the food patch and took longer to land. Further, mynas alarm called more when provisioned by the person who had been involved in trapping. Future work will determine whether narrow generalization gradients are a consistent feature of synanthropic species or whether they broaden as a function of human predation threat level as is predicted by the Predator Recognition Continuum Hypothesis. Practical implications for control are discussed.]]> Fri 11 Nov 2022 17:28:06 AEDT ]]>