Evidence map›Paper›PMID 33070724›Full record

ReviewPhilosophical transactions of the Royal Society of London. Series B, Biological sciences2020

Three decades of sperm competition in birds.

Tim R Birkhead, Robert Montgomerie

Open access · bronzeAbstract readReview
In one paragraph

Review in Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2020. 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
10.1field-weighted citation impact, top 2% 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, 40 citations in OpenAlex.

  1. Article
  2. Evolutionary Aspects of Sperm Physiology and Its Assessment.Methods in molecular biology (Clifton, N.J.) · 2025
    Review
  3. Article
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  13. Article
  14. Fifty years of sperm competition: the structure of a scientific revolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    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

2 authors at 2 institutions in 2 countries.

Tim R BirkheadDepartment of Animal and Plant Sciences, The University of Sheffield, Sheffield S10 2TN, UK.
Robert MontgomerieDepartment of Biology, Queen's University, Kingston, ON K7L 3N6, Canada.
Queen's University · CAUniversity of Sheffield · GB

Funding

Biotechnology and Biological Sciences Research Council
6 · The paper itself

Abstract

In the three decades, since Birkhead and Møller published

Indexed as

Biological EvolutionSexual Behavior, AnimalAnimalsBirdsFertilizationMaleSpermatozoabehaviourbirdsmating systemsmorphologysexual conflictsperm competition

Identifiers

PMID33070724
PMCPMC7661451
OpenAlexW3093380988

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.