chicken: Quick Facts

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The Information Architects of Encyclopaedia Britannica

Last updated

Oct. 22, 2026

Facts

Also Known As	Gallus domesticus

Photos and Videos

Rhode Island Red rooster

free-range chicken

embryos of different animals

Illustration showing different animals and their respiratory organs: a spider with book lungs, a chicken with lungs, a sponge with labeled inflow and outflow pores, a fish with gills, and a caterpillar with spiracles.

Diagram comparing the forelimb bone structures of a human, horse, dolphin, box turtle, fruit bat, and chicken, with color-coded bones showing homologous parts to illustrate evolutionary relationships.

Examine the advanced agricultural practice of chicken farming from the hatchery to the processing plant

Why do chicken eggs come in different colors?

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