ISA Brown
A variety of the ISA Brown
Chicken · Brown eggs · Laying
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About the ISA Brown
The ISA Brown's single colour form is its defining feature: a warm reddish-brown to chestnut hen, typically flecked with white through the tail and a lighter buff underfluff. The colour is a sex-linked trait engineered from Rhode Island Red and Rhode Island White lines, so chicks can be sexed at hatch by down colour (tan pullets, white cockerels). It is a commercial hybrid rather than a standardised breed, so it carries no show recognition; the brown plumage simply marks the workhorse layer that produces around 300 brown eggs in her first year.
At a glance
- Egg colour
- Brown
- Eggs per year
- About 300
- Purpose
- Laying
- Sizes
- Large fowl
- Incubation
- 21 days
- Broodiness
- Low
- Cold hardiness
- Hardy
- Purity
- Hybrid
- Auto-sexing
- Yes
- Origin
- France
- Scientific name
- Gallus gallus domesticus