Preprints
Filtering by Subject: Ornithology
Asian Hornbill Bibliography: a dynamic, online, open-access reference database for use in manuscript citations and hornbill research
Published: 2024-06-18
Subjects: Animal Sciences, Biodiversity, Ecology and Evolutionary Biology, Environmental Studies, Forest Sciences, Library and Information Science, Nature and Society Relations, Ornithology, Plant Sciences, Publishing, Scholarly Publishing
Bibliographic databases and citation tools are integral aids to research. The Asian Hornbill Bibliography presents a compendium of research on Asian hornbills by combining an open access bibliographic database with the free and open source reference manager, Zotero. The bibliography, also hosted and made accessible from the IUCN Hornbill Specialist Group website, includes 725 publications, [...]
Light Pollution at Sea: Implications and Potential Hazards of Human Activity for Offshore Bird and Bat Movements in the Greater North Sea
Published: 2024-05-24
Subjects: Environmental Health and Protection, Environmental Indicators and Impact Assessment, Environmental Studies, Life Sciences, Marine Biology, Natural Resources and Conservation, Natural Resources Management and Policy, Nature and Society Relations, Ornithology, Other Animal Sciences, Other Ecology and Evolutionary Biology, Social and Behavioral Sciences, Terrestrial and Aquatic Ecology, Water Resource Management, Zoology
Human activity in the North Sea is intensifying, as emerging uses, such as offshore wind farms (OWFs) and liquid natural gas (LNG) terminals, are added to fishing, freight shipping and fossil fuel production as traditional forms of resource exploitation. The volume and scale of these additional installations are projected to increase substantially in the coming decades, which amplifies the need [...]
Global review of shorebird tracking publications: Gaps and priorities for research and conservation
Published: 2024-05-07
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Ornithology, Other Ecology and Evolutionary Biology, Research Methods in Life Sciences
Electronic tracking has enabled rapid advances in knowledge of the movement behaviour and habitat use of shorebirds (Charadriiformes), and is thus making a growing contribution to their conservation. However, developing a useful coherent global strategy for tracking these taxa requires an overview of the current availability of data and how it varies along regional and ecological lines. To this [...]
Nest-site selection and nest predation in a tropical passerine in relation to food, friends and foes
Published: 2024-03-04
Subjects: Behavior and Ethology, Ornithology, Zoology
Nest-site selection is an important determinant of avian reproductive success, mainly through its effect on predation risk. However, how environmental and social factors affect nest-site selection and predation risk remains less well understood. Optimal nest positioning may depend on the balance of many distinct factors such as nest predation, food availability, extra-pair mating opportunities, [...]
Distribution, Abundance and Status of At-Risk Birds at a Six-Acre Site Within the Upper Boileau Biodiversity Reserve, Québec: A Year-Long Research Study
Published: 2024-01-22
Subjects: Biodiversity, Life Sciences, Ornithology, Terrestrial and Aquatic Ecology
Understanding the distribution, abundance and status of at-risk birds in any area where human impact is low is an imperative in understanding the larger ecological situation. Birds have been widely seen as reliable indicators of ecological health and there have been significant population declines in North America, especially among migratory aerial insectivores, and are escalading rapidly. As a [...]
No time to die: Temporal patterns of nest predation in a multi-brooded Southern Hemisphere passerine bird
Published: 2024-01-18
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Ornithology
1. Nest predation is frequently the primary cause of early-life mortality in wild avian populations, generating selection for optimising the timing of reproduction to reduce predation risk. Investigating temporal patterns of nest predation is therefore necessary for understanding the intricate relationships between birds and their predators. 2. In this study, we considered the role of temporal [...]
Animal social networks are robust to changing association definitions
Published: 2024-01-12
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Ornithology
The interconnecting links (edges) between individuals (nodes) in an animal social network are often defined by discrete, directed behaviours (interactions). However, where interactions are difficult to observe, a network edge is instead defined as individuals sharing space or overlapping in time (an association). Despite an increasingly accessible toolkit to assemble and analyse animal social [...]
Shrinking body size may not provide meaningful thermoregulatory benefits in a warmer world
Published: 2023-12-13
Subjects: Comparative and Evolutionary Physiology, Ecology and Evolutionary Biology, Life Sciences, Ornithology, Other Ecology and Evolutionary Biology, Physiology, Terrestrial and Aquatic Ecology, Zoology
In a recent and impressive analysis of avian morphological data (covering >250 000 male birds from 105 species), Youngflesh et al.1 report that birds breeding in North America have become significantly lighter over the last three decades, coincident with rising breeding season temperatures. Because these observations recapitulate predictions under Bergmann’s Rule (i.e., that the body size of [...]
Vocal Dimorphism in Anna’s Hummingbirds
Published: 2023-11-28
Subjects: Animal Sciences, Behavior and Ethology, Biology, Ecology and Evolutionary Biology, Integrative Biology, Life Sciences, Ornithology, Zoology
Whereas vocal sexual dimorphism is widespread amongst birds, it has been historically overlooked in non-passerines such as hummingbirds. By evaluating correlations among sex, behaviors, and vocalizations, the meaning and utility of intentional sound production may be inferred. Anna's Hummingbirds (Calypte anna) exhibit pronounced sexual dimorphism, with males being larger and having more vibrant [...]
Interspecific behavioural interference and range dynamics: current insights and future directions
Published: 2023-04-24
Subjects: Animal Sciences, Biodiversity, Ecology and Evolutionary Biology, Evolution, Life Sciences, Ornithology, Other Animal Sciences, Other Ecology and Evolutionary Biology, Terrestrial and Aquatic Ecology, Zoology
Novel biotic interactions in shifting communities play a key role in determining the ability of species’ ranges to track suitable habitat. To date, the impact of biotic interactions on range dynamics have predominantly been studied in the context of interactions between different trophic levels or, to a lesser extent, exploitative competition between species of the same trophic level. Yet, both [...]
Extra-pair paternity, breeding density and synchrony in natural cavities versus nestboxes in two passerine birds
Published: 2023-02-17
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Life Sciences, Ornithology
Most of what is known about extra-pair paternity in hole-nesting birds derives from studies using artificial nesting sites, such as nestboxes. However, it has rarely been investigated whether inference drawn from breeding events taking place in nestboxes matches what would be observed under natural conditions, i.e. in natural cavities. We here report on a variation in promiscuity in blue tits and [...]
Use of Airborne Laser Scanning to assess effects of understorey vegetation structure on nest-site selection and breeding performance in an Australian passerine bird
Published: 2022-12-17
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Ornithology
In wild bird populations, the structure of vegetation around nest-sites can influence the risk of predation of dependent offspring, generating selection for nest-sites with vegetation characteristics associated with lower predation rates. However, vegetation structure can be difficult to quantify objectively in the field, which might explain why there remains a general lack of understanding of [...]
Neotropical Ornithology: Reckoning with historical assumptions, removing systemic barriers, and reimagining the future
Published: 2022-04-22
Subjects: Animal Sciences, Life Sciences, Ornithology
A major barrier to advancing ornithology is the systemic exclusion of professionals from the Global South. A recent special dossier, Advances in Neotropical Ornithology, and a shortfalls analysis therein, unintentionally followed a long-standing pattern of highlighting individuals, knowledge, and views from the Global North, while largely omitting the perspectives of people based within the [...]
Microclimate shifts in nest-boxes and natural cavities before, during and after nesting
Published: 2022-01-17
Subjects: Animal Sciences, Biodiversity, Biology, Ecology and Evolutionary Biology, Life Sciences, Ornithology, Physiology, Population Biology
Animals breeding in anthropogenic shelters such as nest-boxes experience nesting environment in which they did not originally evolve. Over the past decades, they are additionally challenged by climate change – a major environmental force influencing their reproductive ecology. Despite the central importance of nesting microclimate for offspring development and fitness, very little is known about [...]
Temporal patterns in prey size between sexes in a raptor with extreme size dimorphism: testing the intersexual competition hypothesis using web-sourced photographs
Published: 2021-11-27
Subjects: Animal Sciences, Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Life Sciences, Ornithology, Zoology
In most vertebrates, males are larger than females. For raptors, sexual size dimorphism is reversed, with females being larger. Reversed sexual dimorphism (RSD) in raptors is strongly linked to diet, with species feeding on the most agile prey, for example bird-eating raptors, showing the greatest size differences between the sexes. Hypotheses for reversed sexual dimorphism (RSD) include the [...]