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Chicken vision: the science and the numbers

Gallus gallus · order Galliformes · Birds: all the numbers

Chickens have four colour channels, including violet (418, 455, 507 and 569 nm).[1][2] Their sharpest vision resolves 7 cycles per degree, against 63.75 for people in this dataset.[6][7] Chickens stop seeing flicker at 104 Hz, against 60 Hz for people.[42]

See it on your photoBack to How do chickens see?
  • 4colour receptor classesMeasured
  • 7cycles per degree (sharpness)Measured
  • 104hertz flicker fusion (motion)Measured

The chicken (Gallus gallus) is a bird in the order Galliformes. Its eyes belong to the vision type Panoramic grain-eater and wader: four cone types, low to moderate sharpness and an almost all-round field of view. Measured in this species: colour, sharpness, foveas, night vision and motion (flicker fusion). Measured core: measured values on at least 3 of the 6 dials.

This is a simulation built from published eye measurements, not what the animal experiences.

Method: How we know what animals see (the See Like Animals vision engine) · Sources · Last updated . Every value below carries its evidence level and sources; nothing is typed by hand.

What chickens see: colour receptors

Chicken colour receptor peaks, 300 to 700 nmChicken: 4 receptor peaks at 418, 455, 507, 569 nm; you: 3 at 421.5, 532, 558.4 nm. ultraviolet300400500600700
Chicken: 418, 455, 507, 569 nmPeople: 421.5, 532, 558.4 nmWavelength in nanometres

What stands out

  • It has 4 colour receptor classes; people have 3.
  • Its sharpest vision resolves 7 cycles per degree: the finest stripe pattern it can tell apart from grey.
  • It stops seeing flicker at 104 Hz, against 60 Hz for people in this dataset, so fast motion looks about 1.7 times slower to it.[43][44]
  • Activity pattern: diurnal.

The six dials

Evidence levels: how the tiers work. "Measured" means a value measured in this species; "Estimated" values come from a close relative or an eye-size formula. The last column gives the values for people from the same catalogue.

Vision values for the chicken (Gallus gallus), catalogue-v1
DialValueEvidenceSourcesPeople
ColourColour receptors
4 receptor classes: 418 nm (VS/SWS (violet)), 455 nm (SWS (blue)), 507 nm (MWS (green)), 569 nm (LWS (long))
measured in this species
Measured[1][2]Colour receptors: 3 receptor classes: 421.5 nm (VS/SWS (violet)), 532 nm (MWS (green)), 558.4 nm (LWS (long)) Measured (not re-verified)[2][3][4][5]
SharpnessAcuity
7 cycles per degree
median of 5 behavioural rows (method priority rule)
Measured[6][7]Acuity: 63.75 cycles per degree Measured[8][9]
Field of viewBinocular overlap
27.5°
median of 133 relatives in class Aves: Accipiter cooperii, Spatula clypeata, Mareca penelope, Anas platyrhynchos, Ardeola ralloides, Baeolophus bicolor
Group default[10][11][12][13][14][15][16][17][18]Binocular overlap: 122.5° Measured[19][20]
Total field of view: 200° Measured (not re-verified)[21]
Blind area behind the head: 160° Derived[21]
Eye placement: frontal Derived[19][20]
Total field of view
338°
group default: median total field of vision type the "Panoramic grain-eater and wader" type within phylum Chordata in species-v1: Columba livia, Scolopax minor
Group default[22][23]
Blind area behind the head
22°		Group default[22][23]
Eye placement
lateral		Group default[10][11][12][13][14][15][16][17][18]
Sharp zones (foveas)Number of foveas
1
species-v1.csv text: area centralis (no true fovea)
Measured (not re-verified)[24]Number of foveas: 1 Measured[25]
Fovea type: fovea Measured[25]
Fovea type
area centralis		Measured[26][24]
Night visionActivity pattern
diurnal
mode of 8 rows (of 8 rows): diurnal; not_nocturnal
Measured (not re-verified)[27][28][29][30][31][2][32][33]Activity pattern: diurnal Measured (not re-verified)[27][34][35][2][36][37][38][33]
Pupil shape: vertical Group default[39][40]
Reflective layer (tapetum): no Measured[41]
Rods vs cones: cone-dominated Derived[27][34][35][2][36][37][38][33]
Rods vs cones
cone-dominated
nocturnal -> rod-dominated; crepuscular / cathemeral / mixed -> mixed; diurnal -> cone-dominated
Derived[27][28][29][30][31][2][32][33]
Motion (flicker fusion)Flicker fusion frequency
104 Hz
median of 1 bright-light rows (behavioural/whole-eye ERG rows; all rows: [104.0])
Measured[42]Flicker fusion frequency: 60 Hz Measured[43][44]

All birds side by side: Birds: every measurement. Method: how we know what animals see.

Sources

  1. Lind et al. 2014
  2. Longcore 2023
  3. Kirwan
  4. Müller et al. 2009
  5. Thermal Activation and Photoactivation of Visual… 2004
  6. Caves et al. 2018
  7. Caves et al. 2024
  8. Kirk et al. 2004
  9. Veilleux et al. 2014
  10. Cantlay et al. 2023
  11. Lucas et al. 2024
  12. Vision et al. 2026
  13. Pecsics et al. 2023
  14. Portugal et al. 2023
  15. Potier et al. 2018
  16. Potier et al. 2023
  17. Tyrrell et al. 2017
  18. Tyrrell et al. 2017
  19. Heesy 2004
  20. Heffner et al. 1992
  21. Campbell & Green 1965
  22. Martin & Young 1983
  23. Martin 1994
  24. Morris 1982
  25. Kopania et al. 2025
  26. Schaeffel et al. 2025
  27. Anderson et al. 2017
  28. Angielczyk et al. 2014
  29. Light conditions and the evolution of…
  30. Choiniere et al. 2021
  31. Wilman et al. 2014
  32. Schmitz et al. 2011
  33. Moura et al. 2024
  34. Borges et al. 2018
  35. Wilman et al. 2014
  36. Maor et al. 2017
  37. Jones et al. 2009
  38. Schmitz et al. 2011
  39. Banks et al. 2015
  40. Cervino et al. 2021
  41. Guareschi et al. 2025
  42. Lafitte et al. 2022
  43. Healy et al. 2013
  44. Inger et al. 2014

Every value cites its sources (all sources). Values were extracted from these works and converted (units, medians, derived values); changes are ours, and the listed sources do not endorse this site. Data: catalogue-v1, built 2026-09-29. Accuracy notes: how accurate is this? Method: how we know.