There is an old canard that twins are less fertile than singletons. This probably has its source from the fertility difficulty that the heifer co-twin of a bull calf is likely to encounter. —Alan F. Guttmacher, Pregnancy and Birth, 270. canard, n. “A false or unfounded report or story,” especially “a fabricated report”; from the French, literally “duck.” And still there were the flaming ducks, all of them capons, stenchy and outrageous, thudding, thudding, thudding to earth d