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Open research questions in Avian ecology and behavior

666 gap statements mined from Avian ecology and behavior papers in our 7.9M-paper local library, which holds 3,576 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

Choosing where to publish on Avian ecology and behavior? See the ranked Earth Science journals.

What the literature leaves open

  • It highlights the need to study the movement of colonies in response to changing sea ice conditions. The paper aims to fill this gap by analyzing the movement of five emperor penguin colonies in West Antarctica.

    Dynamic emperor penguin colonies · 2026 · DOI

  • The paper identifies technical challenges, such as the need to account for observation biases in citizen science data. It also notes domain challenges, such as the impact of urbanization on biodiversity loss and the need for biodiversity-sensitive urban planning. The paper highlights the challenge of analyzing large datasets, such as the approximately 390,000 bird observation records used in the study.

    Exploring Urban Bird Diversity in a Chinese City Using Citizen Science Data: A Case Study in Shanghai · 2026 · DOI

  • One of the challenges is the limited understanding of the areas visited by small migrants during a year. Another challenge is the lack of tracking devices that are suitable for small birds. The study also faces the challenge of disentangling the effects of different climate indices on the arrival of migratory species.

    Climate in Europe and Africa Sequentially Shapes the Spring Passage of Long-Distance Migrants at the Baltic Coast in Europe · 2025 · DOI

  • The study had limited knowledge of areas visited by small migrants during a year. The number of ringing recoveries available was limited. Most tracking devices are still too heavy for small birds. The study did not operate in spring 2011 and 2020 due to logistics and COVID-19 constraints.

    Climate in Europe and Africa Sequentially Shapes the Spring Passage of Long-Distance Migrants at the Baltic Coast in Europe · 2025 · DOI

  • The need to ensure the young eagles have sufficient flying ability before release. The threat of predation by other birds, such as black kites.

    Parental Hacking—An Alternative Reintroduction Method for the White-Tailed Sea Eagle (Haliaeetus albicilla) · 2025 · DOI

  • The need for a non-invasive and efficient method to sex birds with no or limited sexual dimorphism and/or dichromatism. The lack of a common morphometric-based method to sex migratory birds along their entire flyway.

    Using a common morphometric-based method to sex a migratory bird along its entire flyway despite geographical and temporal variations in body size and sexual size dimorphism · 2024 · DOI

  • These concerns notably involve small migratory birds whose movements across marine barriers and therefore potential interactions with offshore wind turbines remain poorly understood.

    Multi‐Sensor Logger Tracking Reveals the Threats of Offshore Windfarms to Passerine‐Sized Birds · 2026 · DOI

  • Despite being one of the most extensively studied of their group in the western Palearctic, some aspects of its biology, such as primary moult suspension and factors influencing it, remain poorly understood.

    Determinants of primary moult suspension in Dunlins (Calidris alpina), migrating through the southern Baltic coast · 2026 · DOI

  • Marsh terns of the genus Chlidonias provide an excellent model for examining fine-scale niche differentiation, yet comparative data on diet and foraging habitat use in sympatric populations remain scarce.

    Niche partitioning in diet and foraging habitat between two sympatric marsh terns · 2026 · DOI

  • Although the parakeets use the entire park, it remains unclear whether the conservation management or the forest cover plays a more important role in shaping parakeet distribution and if the abundance of invasive ungulates affects the parakeets through forest alteration.

    Density of endemic parakeets in relation to conservation management, ungulate abundance and forest cover in the Parc Provincial des Grandes Fougères, New Caledonia · 2026 · DOI

  • These findings provide new evidence of migratory connectivity between the northern Arabian Gulf and Central Asian summering areas, highlight age-related differences in migration timing, and fill an important knowledge gap in the migration ecology of Greater Spotted Eagles using this poorly studied wintering region.

    Migration and migratory connectivity of Greater Spotted Eagles (Clanga clanga) wintering at the head of the Arabian Gulf · 2026 · DOI

  • The Greater Spotted Eagle ( Clanga clanga), a vulnerable raptor, winters in parts of the Middle East, but migration patterns of birds using the northern Arabian Gulf remain poorly documented.

    Migration and migratory connectivity of Greater Spotted Eagles (Clanga clanga) wintering at the head of the Arabian Gulf · 2026 · DOI

  • However, how site- and individual-level factors jointly correlate with the nest site selection remains unclear.

    Hatching date in Northern Wheatears, as a proxy of nest site selection, shows a longitudinal gradient in the white dunes and occurs earlier in older males in the grey dunes on Norderney · 2026 · DOI

  • This highlights the urgent need for more fieldwork in understudied areas to help prevent extinctions before new species are formally described.

    Species Yet to Be Discovered Are More Threatened and Have Smaller Ranges · 2026 · DOI

  • However, knowledge on long‐term trends of survival and productivity, especially using multiple species over large spatial scales, is scarce.

    Long‐Term Trends of Adult Survival and Productivity in E uropean Songbirds: Role of Migration Strategy and Temperature Gradient Within Species' Ranges · 2026 · DOI

  • Aim Citizen‐science observations are increasingly used to infer species distributions at sea, yet the extent to which observer behaviour and heterogeneous detectability may bias inferences from such pelagic seabird observations, and how explicitly accounting for these processes affects inferred distributional patterns, remains poorly understood.

    Quantifying Bias and Detectability in Pelagic Seabird Citizen Science: Insights From a Mass‐Participation Cruise‐Based Dataset · 2026 · DOI

  • Floodplain wetlands such as Poyang Lake are increasingly shaped by hydrological extremes, yet the mechanisms linking hydrology to waterbirds' space use remain unclear.

    Hydrological Conditions Mediate Habitat Use Plasticity of Wintering Geese in a Floodplain Wetland · 2026 · DOI

  • Research on the role of waterbirds in the dispersal of microalgae through epizoochory and endozoochory remains scarce.

    Avian‐Mediated Microalgal Dispersal in Neotropical Wetlands: The Case of the Southern Screamer ( Chauna torquata ) · 2026 · DOI

  • Climate change is altering biodiversity, but the relative importance of short-term weather changes and long-term climate trends remains unclear, particularly regarding their impacts on functional diversity.

    Long-term monitoring reveals contrasting effects of weather and climate on taxonomic and functional diversity of birds on the East Frisian Islands in the Wadden Sea · 2026 · DOI

  • Estimating the exposure of Leach's Storm-petrels to threats at sea during breeding, given the limited availability of data on their at-sea behaviour. Developing a dynamic species distribution model that accounts for the complex interactions between seabirds and their environment.

    A species distribution model integrating at-sea behaviour, phenology, and population size to inform marine risk exposure for a threatened seabird during breeding · 2026 · DOI

  • However, insect‐consuming species were infrequently detected in orchards with little surrounding natural habitat, whereas crop‐damaging species were detected on most days even where natural habitat was scarce.

    Contrasting effects of natural habitat cover on insect‐consuming and crop‐damaging birds in Mediterranean orchards · 2026 · DOI

  • Refinement will enable cryptic communities in areas with sparse data to be identified.

    A Typology of Australian Terrestrial Bird Communities · 2026 · DOI

  • Investigating the integration of immigrants with original penguins at Dawson Lambton, - Studying the unique characteristic of the Dawson Lambton colony forming two distinct…

    Dynamic emperor penguin colonies · 2026 · DOI

  • Further study on the impacts of climate change on Leach's Storm-petrel populations, - Investigation of the effects of other human activities on seabird populations, - Development of more comprehensive species distribution…

    A species distribution model integrating at-sea behaviour, phenology, and population size to inform marine risk exposure for a threatened seabird during breeding · 2026 · DOI

  • Investigating the efficiency of DFs to sex Sanderling on a large scale, - Developing DFs for other species in the Scolopacidae family, - Studying the genetic differentiation between Sanderlings breeding in different…

    Using a common morphometric-based method to sex a migratory bird along its entire flyway despite geographical and temporal variations in body size and sexual size dimorphism · 2024 · DOI

Most-cited papers in Avian ecology and behavior

Most recent work

Find a gap in your own Avian ecology and behavior sub-topic

This page shows what the Avian ecology and behavior literature already flags as unresolved. To narrow it to your specific question, search the Research Gap Finder: the search is free with a free account and lists the papers closest to your topic first. Unlocking that topic (50 credits, charged once) fills the comparison table from our 7.9M-paper local library and writes the gaps from its rows.

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Open questions raised by papers listed on this page include: (1) These concerns notably involve small migratory birds whose movements across marine barriers and therefore potential interactions with offshore wind turbines remain poorly understood (“Multi‐Sensor Logger Tracking Reveals the Threats of Offshore Windfarms to…”, 2026); (2) Despite being one of the most extensively studied of their group in the western Palearctic, some aspects of its biology, such as primary moult suspension and factors influencing it, remain poorly understood (“Determinants of primary moult suspension in Dunlins (Calidris alpina),…”, 2026); (3) Marsh terns of the genus Chlidonias provide an excellent model for examining fine-scale niche differentiation, yet comparative data on diet and foraging habitat use in sympatric populations remain scarce (“Niche partitioning in diet and foraging habitat between two sympatric marsh…”, 2026); (4) How site- and individual-level factors jointly correlate with the nest site selection remains unclear (“Hatching date in Northern Wheatears, as a proxy of nest site selection, shows a…”, 2026); (5) Knowledge on long‐term trends of survival and productivity, especially using multiple species over large spatial scales, is scarce (“Long‐Term Trends of Adult Survival and Productivity in E uropean Songbirds:…”, 2026). 666 gap statements have been mined from Avian ecology and behavior papers in our 7.9M-paper local library, which holds 3,576 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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