Geese family orientation is so fascinating..... <3 I love them... not sure what the norm is . but mine are very personally connected life long once they attach to a gander group. All the female geese help the matriarch female, the family group all lay fertile eggs in the one nest, the matriarch female , she is (for my groups) is the one that sits on the nest and hatches.. is #1 mommy to the babies The rest of the females help with the training of the babies once they hatched, especially if the babies try to wonder away from the nest after being hatched and the matriarch is still hatching the rest on the nest. They also insure while out and about the babies don't wonder off from the group. All the geese will chastise a baby not staying with it's group while walking about. And if an older hatched baby walks off a nest and starts wondering about the gander will walk with the baby and eventually gently nudge the baby back towards the nest.
Maybe I spend too much time lol but it's so endearing and cool... Geese have this family system down pat.......... It may seem like they harsh to the babies about breaking the rules they want them to learn, but they not trying to hurt them, they want the babies to learn to be safe.
(thanks for the information that they waiting for the eggs to pile up before starting the hatch time) I never thought of that, I have a good size flock putting in eggs quickly I've never seen them do that. I have figured out that the unfertilized or not the best quality eggs are put into a separate nest that is not sat on. That and some egg stealing by lower status, or unattached geese in the flock. literally push the egg under a wing and walk off with it.
Excited for you !!!!