Fake battery chickens, real green algae and liquid manure: activists from the environmental NGO Greenpeace are pouring thousands of litres of liquid manure outside the French Ministry of Agriculture, calling for "a moratorium on factory farms" in the name of animal welfare and the protection of the planet. "The environment is incapable of ingesting all this manure without there being environmental consequences", says Sandy Olivar Calvo, Greenpeace France's agriculture campaigner. IMAGES AND SOUNDBITES