Evidence map›Paper›PMID 33240094›Full record

ReviewFrontiers in physiology2020

Avian Physiology: Are Birds Simply Feathered Mammals?

Colin G Scanes

Abstract readReview
In one paragraph

Review in Frontiers in physiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–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

15 citing papers in PubMed.

  1. Gut microbes · 2026
    Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Why the superb physiological capacity of birds matters.The Journal of experimental biology · 2025
    Article
  8. Endocrine and molecular regulation of seasonal avian immune function.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  9. Article
  10. Article
  11. Article
  12. Evolution in reproductive tempo and investment across the Peromyscus radiation.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2023
    Review
  13. Review
  14. Article
  15. 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

1 author.

Colin G ScanesDepartment of Poultry Science, University of Arkansas, Fayetteville, AR, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There are marked differences between the physiology of birds and mammals. These reflect the evolutionary distance between the two classes with the last common ancestor estimated as existing 318 million years ago. There are analogous organ systems in birds and mammals. However, marked differences exist. For instance, in the avian gastro-intestinal tract, there is a crop at the lower end of the esophagus. This functions both to store feed and for microbial action. The avian immune system lacks lymph nodes and has a distinct organ producing B-lymphocytes, namely the bursa

Indexed as

avianbursadomesticationovaryoviductspleen

Identifiers

PMID33240094
PMCPMC7680802

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.