I don't feed the ducks bananas. ^_^ (although there is a papaya tree across the canal and the wild ducks peck at the hanging fruit in the late summer and devour it).
Since I have so much, I feed bananas to the iguanas. And I make banana bread at least once a month. I am blessed to have this luscious fruit growing in my yard. When they fully ripen, I keep them in the freezer, so when the tree is dormant in winter, I have organic fruit, at the ready.