Cavity-Nesting Birds in Forest Ecosystems
Summary
Cavity-nesting birds are a vital component of forest biodiversity, encompassing species that excavate their own nest sites (primary cavity nesters) and those that occupy existing holes (secondary cavity nesters). These birds contribute to nutrient cycling, seed dispersal and invertebrate control, while their use of tree cavities creates nesting opportunities for a wide array of other organisms. The availability and quality of cavities are governed by forest structure, tree species composition and disturbance regimes. Large-diameter trees, standing deadwood (snags) and complex stand architectures provide the essential resources that sustain diverse cavity-nesting assemblages. Spatial niche segregation often arises among coexisting species, with vertical and horizontal stratification of cavity use reducing competition. Global pressures such as logging, agricultural conversion and the removal of veteran trees have altered cavity availability, leading to declines in some specialist species. Conservation strategies increasingly emphasise retention forestry, prescribed deadwood creation and the protection of old-growth patches. By integrating long-term monitoring with adaptive management, forest managers can maintain the functional roles of cavity nesters in regulating insect outbreaks, supporting pollination networks and enhancing overall ecosystem resilience.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Cavity-Nesting Birds in Forest Ecosystems publication trend
The graph below shows the total number of articles in cavity-nesting birds in forest ecosystems across all publications each year (not limited to Nature Index journals).
Technical terms
Cavity-nesting bird: A bird species that nests within pre-existing holes or excavates its own cavities in trees.
Primary cavity nester: A species capable of excavating or creating its own nest holes in wood.
Secondary cavity nester: A species unable to excavate and reliant on existing cavities made by other organisms or natural decay.
Diameter at breast height (DBH): A standard measurement of tree trunk diameter taken at 1.3 metres above ground.
Snag: A standing dead or dying tree that provides critical habitat structures for cavity nesters and other wildlife.
References
- Tall, large-diameter trees and dense shrub layer as key determinants of the abundance and composition of bird communities in oak-dominated forests. Journal of Forestry Research (2024).
- Spatial niche segregation between bird species in the Białowieża primeval forest (NE Poland). Forest Ecosystems (2023).
- Decaying trees improve nesting opportunities for cavity‐nesting birds in temperate and boreal forests: A meta‐analysis and implications for retention forestry. Ecology and Evolution (2018).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.