Louise just found this website. It's an appeal from the WSPA, the World Society for the Protection of Animals, to the McDonald's restaurant chain, to stop using eggs from hens raised in cages, and use only the eggs from free-run hens.
Since McDonald's uses only free-run eggs in Europe and the UK, there's no excuse for their Canadian restaurants still using eggs from caged hens. Their USA restaurants have already pledged to phase in free-run eggs this year.
Check out the letter-writing campaign sponsored by WSPA. Send McDonald's a note. Odds are, even if you never eat at McDonald's there's one in your area anyway, so write to them as a neighbour and part of the food community.