Years ago I ragged on a mate for not having the balls to dispatch a nest of baby Indian Mynas that had set up camp in his roof gutter. These introduced birds invade the nests of native birds, destroying their eggs whilst laying their own.
Then a family of Mynas set up camp in my birdhouse. I found that, confronted with the baby Mynas' cheeps, I didn't have the balls to dispatch of them myself. I put the birdhouse and its baby Indian Mynas at ground level, walked away and left the dirty work to my cat.
It shames me to this day. But at least I have since grown a pair. Every spring any of those sons of b***es who occupy my birdhouse get a bucket of water and a heavyweight.