Для этого используются самки.https://www.genderinclusivebiology.com/newsletter/15-of-geese-pair-bonds-are-male-male-with-some-remaining-monogamous-amp-cooperative-for-over-15-years-gender-showcase-9-12#:~:text=15%25%20of%20geese%20pair%2Dbonds%20are%20male%2Dmale.,and%20live%20for%2020%20years