ReviewAnimal cognition2017
Thinking chickens: a review of cognition, emotion, and behavior in the domestic chicken.
Review in Animal cognition, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
66 citing papers in PubMed, 2 syntheses or guidelines pooled it, 273 citations in OpenAlex.
- AI-Powered Vocalization Analysis in Poultry: Systematic Review of Health, Behavior, and Welfare Monitoring.Sensors (Basel, Switzerland) · 2025Pooled it
- Cognitive tasks as measures of pig welfare: a systematic review.Frontiers in veterinary science · 2023Pooled it
- A Step Too Far? Public Perceptions on Navigating the Introduction of Robot Technologies into the Human-Animal Relationship in Agriculture.Animals : an open access journal from MDPI · 2026Article
- Brains, quacks, and boojums: a review of neurotransmitter and neuroendocrine bases of welfare and enrichment in poultry with an emphasis on the Pekin duck.Poultry science · 2026Review
- Why Humans Prefer Phylogenetically Closer Species: An Evolutionary, Neurocognitive, and Cultural Synthesis.Biology · 2025Review
- Pet, Pest, Profit: Patient! How Attitudes Toward Animals Among Veterinary Students in the Netherlands Differ According to Animal Categories and Student-Related Variables.Animals : an open access journal from MDPI · 2025Article
- Lateralised Behavioural Responses of Chickens to a Threatening Human and a Novel Environment Indicate Fearful Emotions.Animals : an open access journal from MDPI · 2025Article
- Chickens perceive humans as social buffers and may follow human-given cues: A pilot study.Poultry science · 2025Article
- Social learning and culture in birds: emerging patterns and relevance to conservation.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- The Chicken Embryo: An Alternative Animal Model in Development, Disease and Pharmacological Treatment.Pharmacology research & perspectives · 2025Review
- Towards Automated Chicken Monitoring: Dataset and Machine Learning Methods for Visual, Noninvasive Reidentification.Animals : an open access journal from MDPI · 2024Article
- The Political Salience of Animal Protection in the Republic of Ireland (2011-2020): What Do Irish Political Parties Pledge on Animal Welfare and Wildlife Conservation?Animals : an open access journal from MDPI · 2024Article
- Domestic chickens solving mirror-mediated spatial location tasks uncovering their cognitive abilities.Scientific reports · 2024Article
- Laying Hens: Why Smothering and Not Surviving?-A Literature Review.Animals : an open access journal from MDPI · 2024Review
- Emotional "Contagion" in Piglets after Sensory Avoidance of Rewarding and Punishing Treatment.Animals : an open access journal from MDPI · 2024Article
- Bacterial chondronecrosis with osteomyelitis lameness in broiler chickens and its implications for welfare, meat safety, and quality: a review.Frontiers in physiology · 2024Review
- Adult neurogenesis and the microbiota-gut-brain axis in farm animals: underestimated and understudied parameters for improving welfare in livestock farming.Frontiers in neuroscience · 2024Review
- Clicker Training as an Applied Refinement Measure in Chickens.Animals : an open access journal from MDPI · 2023Article
- Interspecific differences in developmental mode determine early cognitive abilities in teleost fish.Animal cognition · 2023Article
- Sensitivity to the role of an animated agent from observed interactions in newborn chicks (Royal Society open science · 2023Article
6 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Domestic chickens are members of an order, Aves, which has been the focus of a revolution in our understanding of neuroanatomical, cognitive, and social complexity. At least some birds are now known to be on par with many mammals in terms of their level of intelligence, emotional sophistication, and social interaction. Yet, views of chickens have largely remained unrevised by this new evidence. In this paper, I examine the peer-reviewed scientific data on the leading edge of cognition, emotions, personality, and sociality in chickens, exploring such areas as self-awareness, cognitive bias, social learning and self-control, and comparing their abilities in these areas with other birds and other vertebrates, particularly mammals. My overall conclusion is that chickens are just as cognitively, emotionally and socially complex as most other birds and mammals in many areas, and that there is a need for further noninvasive comparative behavioral research with chickens as well as a re-framing of current views about their intelligence.
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What OpenQuestion holds
Registered trials
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.