We were on the subject of eggs in various posts, and I thought this bit might be interesting...
All eggs are not created the same...
Sustainable poultry eat grasses, greens, grains, and insects, whereas factory farm poultry are fed animal by-products such as bone, feathers, blood, manure, and animal parts, as well as grain, arsenic, mineral and vitamin supplements, enzymes, and antibiotics. If a farmer tells you that the feed was supplemented with anything, dig further to find out exactly what the supplements are.
This is an excerpt from a book entitled “Food Inc.” It refers to the situation in the US, but I think it's not much different from the Canadian scene. We have lots of factory chicken farms in Canada.