hi so ive gathered two batches of our 4 gooses eggs for the incubator but would love for them to hatch their own brood too. they share 2 separate nests and there are 6 eggs in one and 5 in the other nest. they guard it and sort of tend to it a little bit but show no sign of sitting. hw do i get them to sit? are they just not broody? the eggs should b about 5 days old now.