Evidence map›Paper›PMID 34099553›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Drivers of fatal bird collisions in an urban center.

Benjamin M Van Doren, David E Willard, Mary Hennen, Kyle G Horton, Erica F Stuber, Daniel Sheldon, Ashwin H Sivakumar, Julia Wang, Andrew Farnsworth, Benjamin M Winger

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Limited capacity of habitat features to buffer grassland bird declines.Ecological applications : a publication of the Ecological Society of America · 2026
    Article
  3. Article
  4. A model to quantify the probability of collision between birds and aircraft: Applications for onboard lighting.Ecological applications : a publication of the Ecological Society of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Conservation-focused mapping of avian migratory routes using a pan-European automated telemetry network.Conservation biology : the journal of the Society for Conservation Biology · 2025
    Article
  9. Article
  10. Article
  11. To mitigate bird collisions, enforce the Migratory Bird Treaty Act.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Autumn stopover hotspots and multiscale habitat associations of migratory landbirds in the eastern United States.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Benjamin M Van DorenCornell Lab of Ornithology, Cornell University, Ithaca, NY 14850; vandoren@cornell.edu.ORCID 0000-0002-7355-6005
David E WillardGantz Family Collections Center, Field Museum of Natural History, Chicago, IL 60615.
Mary HennenGantz Family Collections Center, Field Museum of Natural History, Chicago, IL 60615.
Kyle G HortonDepartment of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, CO 80523.ORCID 0000-0003-3243-3081
Erica F StuberCornell Lab of Ornithology, Cornell University, Ithaca, NY 14850.
Daniel SheldonCollege of Information and Computer Sciences, University of Massachusetts Amherst, Amherst, MA 01003.ORCID 0000-0002-4257-2432
Ashwin H SivakumarFlintridge Preparatory School, La Cañada Flintridge, CA 91011.ORCID 0000-0001-9628-3751
Julia WangCornell Lab of Ornithology, Cornell University, Ithaca, NY 14850.
Andrew FarnsworthCornell Lab of Ornithology, Cornell University, Ithaca, NY 14850.ORCID 0000-0002-9854-4449
Benjamin M WingerMuseum of Zoology, University of Michigan, Ann Arbor, MI 48109.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Millions of nocturnally migrating birds die each year from collisions with built structures, especially brightly illuminated buildings and communication towers. Reducing this source of mortality requires knowledge of important behavioral, meteorological, and anthropogenic factors, yet we lack an understanding of the interacting roles of migration, artificial lighting, and weather conditions in causing fatal bird collisions. Using two decades of collision surveys and concurrent weather and migration measures, we model numbers of collisions occurring at a large urban building in Chicago. We find that the magnitude of nocturnal bird migration, building light output, and wind conditions are the most important predictors of fatal collisions. The greatest mortality occurred when the building was brightly lit during large nocturnal migration events and when winds concentrated birds along the Chicago lakeshore. We estimate that halving lighted window area decreases collision counts by 11× in spring and 6× in fall. Bird mortality could be reduced by ∼60% at this site by decreasing lighted window area to minimum levels historically recorded. Our study provides strong support for a relationship between nocturnal migration magnitude and urban bird mortality, mediated by light pollution and local atmospheric conditions. Although our research focuses on a single site, our findings have global implications for reducing or eliminating a critically important cause of bird mortality.

Indexed as

Animal MigrationAnimalsBirdsChicagoCitiesLightingTime FactorsWindbird migrationconservationlight pollutionmortalityurban planning

Identifiers

PMID34099553
PMCPMC8214683

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.