Are you tired of boring old milk in your cereal? Is the half and half in your coffee leaving you flat? If so, the recent discovery of the gene responsible for pigeon crop "lactation" might be the good news you've been waiting for. While mammals are the only animals that produce true milk, a number of birds produce a nutritious, liquid "crop milk" for their chicks. From the article: "The idea of drinking pigeon milk may bring a shudder to every sane and rational person in the world, but it's actually quite nutritious. Although it's high in fat, to help the young squabs develop fast, it's also packed full of antioxidants and immune-system-boosting proteins."