that is what people say but the gander will only pick one true goose and the others espically with 3 geese the other 2 geese wont be as important to the gander and thats why its handy to have atleast to ganders when you have 3 females and most of the time the gander will only mate with 2 of...
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And the male goslings are young and will get along great for first few years since they are raised together so you can take your time getting rid of one :)