Evidence map›Paper›PMID 28163870›Full record

ReviewInterface focus2017

Features of owl wings that promote silent flight.

Hermann Wagner, Matthias Weger, Michael Klaas, Wolfgang Schröder

Open access · bronzeAbstract readReview
In one paragraph

Review in Interface focus, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
91.9field-weighted citation impact, top 1% of its field
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

14 citing papers in PubMed, 124 citations in OpenAlex.

  1. Review
  2. Abundance, Diet and Foraging of Galápagos Barn Owls (Animals : an open access journal from MDPI · 2025
    Article
  3. Nocturnal camouflage through background matching against moonlight.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Article
  6. Model organisms and systems in neuroethology: one hundred years of history and a look into the future.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2024
    Review
  7. Article
  8. Article
  9. Organismal Design and Biomimetics: A Problem of Scale.Biomimetics (Basel, Switzerland) · 2021
    Review
  10. Review
  11. New genome assembly of the barn owl (Ecology and evolution · 2020
    Article
  12. Evolution and Ecology of Silent Flight in Owls and Other Flying Vertebrates.Integrative organismal biology (Oxford, England) · 2020
    Review
  13. How localized force spreads on elastic contour feathers.Journal of the Royal Society, Interface · 2019
    Article
  14. Flow Features of the Near Wake of the Australian Boobook Owl (Integrative organismal biology (Oxford, England) · 2019
    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

4 authors at 1 institution in 1 country.

Hermann WagnerInstitute of Zoology , RWTH Aachen University , Aachen , Germany.ORCID 0000-0002-8191-7595
Matthias WegerInstitute of Zoology , RWTH Aachen University , Aachen , Germany.
Michael KlaasInstitute of Aerodynamics , RWTH Aachen University , Aachen , Germany.
Wolfgang SchröderInstitute of Aerodynamics , RWTH Aachen University , Aachen , Germany.
RWTH Aachen University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Owls are an order of birds of prey that are known for the development of a silent flight. We review here the morphological adaptations of owls leading to silent flight and discuss also aerodynamic properties of owl wings. We start with early observations (until 2005), and then turn to recent advances. The large wings of these birds, resulting in low wing loading and a low aspect ratio, contribute to noise reduction by allowing slow flight. The serrations on the leading edge of the wing and the velvet-like surface have an effect on noise reduction and also lead to an improvement of aerodynamic performance. The fringes at the inner feather vanes reduce noise by gliding into the grooves at the lower wing surface that are formed by barb shafts. The fringed trailing edge of the wing has been shown to reduce trailing edge noise. These adaptations to silent flight have been an inspiration for biologists and engineers for the development of devices with reduced noise production. Today several biomimetic applications such as a serrated pantograph or a fringed ventilator are available. Finally, we discuss unresolved questions and possible future directions.

Indexed as

featherReynolds numbersilent flighttrailing-edge noisewingwing load

Identifiers

PMID28163870
PMCPMC5206597
OpenAlexW2561797084

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.