Preprints
Filtering by Subject: Ornithology
Long-lasting negative effects of poor early life conditions on cognitive performance in adulthood in a wild bird
Published: 2026-03-09
Subjects: Behavior and Ethology, Evolution, Life Sciences, Nutrition, Ornithology
Adverse conditions encountered during growth, such as stress or malnutrition, are known to affect cognitive development and functions in adulthood in humans and laboratory animals. However, how early life conditions can influence adult cognition in wild animals remains unclear. Yet cognitive abilities such as innovation can be crucial for animals to cope with rapidly changing environments. We [...]
The Individualised Niche in Motion; quantifying individualised niches with movement data
Published: 2026-02-26
Subjects: Aquaculture and Fisheries Life Sciences, Behavior and Ethology, Evolution, Ornithology, Other Animal Sciences, Other Ecology and Evolutionary Biology, Population Biology, Terrestrial and Aquatic Ecology, Zoology
Individuals of the same species often differ consistently in their use of resources, their responses to environmental gradients, and their movement decisions. Between-individual variation across niche axes has been shown to have important ecological consequences. Yet practical frameworks that translate modern tracking data into operational, comparable measures of niche individual specialisation [...]
Age class and natal origin drive foraging patterns in a reintroduced Cinereous Vulture population
Published: 2026-02-04
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Ornithology
Widespread vulture population declines are often counteracted by conservation strategies including reintroduction programs and supplementary feeding schemes. However, the role of supplementary feeding – focusing on specific, predictable, feeding sites - on movement behaviour, has been little explored, especially within populations in which reintroduced and wild born birds of different age-classes [...]
Birds on Fire: Heavy disturbance by fireworks affecting wintering gulls, waterbirds and passerines
Published: 2026-01-28
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Ornithology
Fireworks are a global anthropogenic disturbance, yet their impacts on wildlife remain poorly understood. Despite frequent media coverage and growing public concern of mass bird disturbances around New Year, scientifically robust assessments of nocturnal behavioural responses on the ground are lacking. Here, I quantified immediate and mid-term responses of urban birds with a focus on Black-headed [...]
Edge-of-range camera-trap records of Superb Lyrebird (Menura novaehollandiae) in western and central-north Tasmania (2018–2025)
Published: 2025-11-18
Subjects: Biodiversity, Life Sciences, Ornithology
Tasmania’s Superb Lyrebird (Menura novaehollandiae) was deliberately introduced to south‑east Tasmania in 1934 and has since dispersed across much of the island’s central bioregions. Despite this expansion, the Lyrebird’s future range dynamics remains uncertain, with recent modelling projecting that it will take over 50 years for the species to establish in the north-west of the island. Here we [...]
Cultural practices and food subsidies shape the architecture of multispecies coexistence in a tropical megacity
Published: 2025-11-03
Subjects: Animal Studies, Behavior and Ethology, Biodiversity, Community-based Research, Human Ecology, Ornithology, Other Animal Sciences, Population Biology, Urban Studies and Planning, Zoology
1. Multispecies relationships among people and nature in tropical cities are increasingly shaped by pervasive waste systems, against the backdrop of changing cultural practices and infrastructure. But human–animal conflict is often managed through reactive, species-specific interventions that overlook the social-ecological processes producing urban coexistence. We examined how cultural practices [...]
Associations on land and at sea? A pilot study on the utility of proximity loggers to assess inter-individual relationships in colonial seabirds
Published: 2025-08-15
Subjects: Marine Biology, Ornithology
Accurate and extensive data collection is essential for understanding animal sociality, but collecting associations between individuals remains challenging. Animals often associate and interact outside of the range of an observer, especially in environments such as underwater or underground. However, the development of proximity loggers using Bluetooth and radio frequency to detect associations [...]
Tracking the hidden niches: Movement-based insights into northern lapwing intraspecific variation and conservation
Published: 2025-08-01
Subjects: Animal Sciences, Behavior and Ethology, Biodiversity, Entomology, Life Sciences, Ornithology, Other Animal Sciences, Other Ecology and Evolutionary Biology, Population Biology, Zoology
Global monitoring data reveal farmland bird population declines, primarily driven by agricultural intensification, chemical inputs, and climate shifts. The northern lapwing (Vanellus vanellus) is a farmland bird that exemplifies this decline across Europe. The aim of this study is to quantify intraspecific variation in habitat selection and evaluate the degree of behavioural variance in resource [...]
Physical and Migration Metrics of White Storks (Ciconia ciconia) and the influence that landfills play in their variation
Published: 2025-07-24
Subjects: Comparative and Evolutionary Physiology, Ecology and Evolutionary Biology, Life Sciences, Ornithology, Zoology
1. White storks (Ciconia Ciconia) are a traditionally fully migratory species and their numbers in western Europe were decimated in the last century. Their numbers have since boomed and they have altered their migratory strategy to have become a partially migratory species. This change has been ascribed in large part to anthropogenic food subsidies, particularly in the form of landfill sites. 2. [...]
Big bills, small changes: with few exceptions, Jungle crows show minor variation in bill morphology across their distribution
Published: 2025-07-21
Subjects: Animal Sciences, Ecology and Evolutionary Biology, Life Sciences, Ornithology, Other Ecology and Evolutionary Biology
Examinations of morphology can reveal a species' relationship with the environment and their evolutionary trajectory. Particularly pronounced difference can hint at specific selection pressures, and reveal hitherto unknown species. Cryptic species, with only subtle morphological differences, are widespread and ignoring them risks underestimating biodiversity and their threatened status. Recently [...]
Social interactions shape anaerobic, but not aerotolerant, gut microbiome composition in a cooperative breeding species
Published: 2025-06-21
Subjects: Environmental Microbiology and Microbial Ecology Life Sciences, Ornithology
Background Social transmission of microbes has profound impacts on disease epidemiology and host health. However, how social factors influence gut microbiome (GM) transmission in wild populations is not well understood. Here, we use a wild population of the Seychelles warbler, a facultative cooperatively breeding passerine, to determine whether cooperative breeding behaviour influences the GM. [...]
Colorful birds face heightened extinction risk around the world
Published: 2025-06-10
Subjects: Biodiversity, Ecology and Evolutionary Biology, Environmental Studies, Life Sciences, Ornithology
Many of the functional traits that mediate extinction risk across the tree life relate indirectly to a species’ ability to persist in a changing world. Yet, there are certain traits such as coloration that directly affect human interactions with wildlife. Here, we use an existing dataset of color metrics for 4334 passerine bird species combined with global functional trait data to determine [...]
Deep-learning technology provides insights into the morphological evolution of birds
Published: 2025-04-09
Subjects: Biodiversity, Bioinformatics, Computational Engineering, Evolution, Life Sciences, Ornithology, Research Methods in Life Sciences
The evolution of biological morphology is critical for understanding the diversity of the natural world, yet traditional analyses often involve subjective biases in the selection and coding of morphological traits. This study employs deep learning techniques, utilizing a pretrained ResNet34 model capable of recognizing over 10,000 bird species, to explore avian morphological evolution. We [...]
Inferring reproductive phenology and success from proportions of juveniles in population monitoring
Published: 2025-03-13
Subjects: Longitudinal Data Analysis and Time Series, Ornithology, Statistical Methodology
1. Phenological shifts caused by climate change are increasingly documented in wild populations by the widespread collection of datasets on reproductive timing and success. These phenological events are often inferred by examining changes in population abundance and age structure throughout the breeding season. However, the quantitative relationship between the observed proportion of juveniles [...]
High-resolution habitat suitability maps for all widespread Italian breeding bird species
Published: 2025-02-18
Subjects: Life Sciences, Ornithology, Other Ecology and Evolutionary Biology
Tackling the current global biodiversity crisis requires spatially accurate biodiversity data to rapidly assess knowledge gaps and set conservation priorities. Obtaining accurate data across large spatial scales is often challenging, due to the massive logistical and economic requirements of large-scale surveys. Here, we provide high-resolution (0.81 to 81 km², depending on species ecology) [...]