How long do geese raise babies?

[Squeak61]

I have a super crazy gander that adopted a 4 week old duckling and gosling (against my will) and he is insanely protective and rude now He’s usually such a sweetheart, so you can imagine why I’m so irritated with him biting me and hissing 24/7. How long do geese raise their babies for? When do they stop caring for them? I’m hoping it’s soon so that he’ll go back to normal! Would I have better luck just separating him and the babies?

 

[Gray Farms]

They'll raise/protect their goslings until they are about a year old.

 

[Miss Lydia]

It’s very natural behavior! They are great parents.