how to tell how old a goose is?

[Milly6466]

We have a goose what should we do for her with it coming on winter months she has a floating house with straw but not sure that’s best

 

[GranderTheGander]

I've known free roaming domestic geese that lived over 20 years. Some older ones can get leg arthritis, cataracts, or become less waterproof and shiver in the cold.