If I decide to keep a pullet, hoping on a 'natural brooder' [Cochin] rather than for laying probability, is there a way to encurage her to be broody? I guess I am asking: "which comes first, the fertile eggs or the broody hen?" i.e. if I have fertile eggs [let's sppose a gift from a breeder], if I put them in a nest-box pen with a hen of a breed known for 'broodiness', is she likely to set and hatch them? OR are hormones involved, and if she 'goes broody' I had better find some fertile eggs?