Nearly half the eggs sold in Australia are free-range, but only 5% of pork comes from pigs raised outdoors.
Having looked after chickens for generations, humans are pretty good at getting them to keep on laying eggs.
Proposed national standards for chicken farming argue that battery cages are not a significant detriment to hens' health.
After Snowdale Holdings was penalised A$1 million for lying about their eggs being free-range, here are some tips on getting what you pay for in the supermarket.
Many shoppers choose free-range eggs because they think they are tastier and healthier, rather than being motivated purely by concerns for hens' welfare, a new study has found.
Voters in Massachusetts passed a ballot measure that assumed so. But a philosopher of animal welfare suggests the ethical issues involved are trickier than a yes/no vote would suggest.
New standards for free-range eggs will limit stocking densities and mean hens must have access to outdoors.