Can the goslings be eaten?
And if he smashed their heads with a hammer and lit their writhing bodies on fire with gasoline, would you still feel the same?
It's a freaking bird that will take a crap on you if you scare it.
Stop getting your panties in a wad over this. It's not sentient life.
It's it respectable behavior ? Hell no, but he should not be in jail for it.