See the difference between cage-free egg production and battery-cage egg production.
Think You Know 'Free-Range' and 'Cage Free' Chicken? Think Again
Nestlé commits to 100% cage-free eggs in the United States
Cage-free eggs: Washington law bans small cages for egg-laying hens - Vox
Animal rights lobby in Maryland revisits cage-free eggs - The
Everything You Should Know About Battery Cages
Do you know where your eggs come from?
The FoodPrint of Eggs - FoodPrint
Free-range eggs - Wikipedia
Poultry Industry Is Lobbying to Force Stores to Sell Their Eggs
New Legislation Would Improve Living Conditions of Egg-Laying Hens
Humane Society International on LinkedIn: Great news for hens
Cage-Free Reforms Open Philanthropy