One exhibit shows two stuffed female swans on a nest -- birds sometimes raise young in homosexual couples, either after a female has forsaken a male mate or donated an egg to a pair of males.

• 其中有一个展品展示的是两只吃饱的雌性天鹅同居一巢，鸟类有时会和“同性伴侣”一起孵化雏鸟，有时雌鸟会抛弃雄鸟而和另一只雌鸟孵化雏鸟，而有时雌鸟把鸟蛋送给一对雄鸟来孵化。