Tier 1 · national extension resource
eXtension / USDA-NIFA supported resource
Sex-Linked Traits in Poultry
Open source →Last checked: 2026-10-03
Tier 1 · university extension
Mississippi State University Extension
Choosing the Right Breed for Your Backyard Flock
Open source →Last checked: 2026-10-03
Tier 1 · university extension
Mississippi State University Extension
Poultry Beginnings: Raise Your Own Backyard Chickens
Open source →Last checked: 2026-10-03
Tier 1 · university extension
Penn State Extension
Small Scale Poultry Housing
Open source →Last checked: 2026-10-03
Tier 1 · university extension
University of Maine Cooperative Extension
Maine Poultry Facts: Match Your Need to the Right Breed
Open source →Last checked: 2026-10-03
Tier 1 · university extension
University of Minnesota Extension
Caring for chickens in cold weather
Open source →Last checked: 2026-10-03
Tier 1 · university extension
Utah State University Extension
Managing Chickens From Chicks to Peak Egg Production
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Quick Reference Guide to Heritage Chickens
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Buckeye Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Chantecler Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Cochin Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Faverolles Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Minorca Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Hamburg Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
New Hampshire Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Rhode Island White
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Langshan Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Dorking Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Plymouth Rock Chicken
Open source →Last checked: 2026-10-03
Tier 2 · specialized nonprofit
The Livestock Conservancy
Russian Orloff Chicken
Open source →Last checked: 2026-10-04
Tier 3 · breed club
Cream Legbar Club
Legbar Breed Overview
Open source →Last checked: 2026-10-03
Tier 3 · specialty breeder
Greenfire Farms
Bielefelder / Silver Bielefelder breed information
Open source →Last checked: 2026-10-04
Tier 3 · hatchery
Hoover's Hatchery
Bielefelder
Open source →Last checked: 2026-10-04