Short and sweet, good "on the go" game, but I think it could be better like;
adding a little more freedom to the harpoon would be great; because clicking on the bird or above it is just not enough and annoying, like in couple parts where I tried to shoot the bird but the flower refuses even tho I'm almost positive it was in the range, some other times I'm trying to pre-shot the spawning bird but again I can't so I fall out of range having to go… Well not through a lot really; there's no THAT kind of big falls, even that hole on the left never did I get that close to it.
Also, adding a restart button would be lovely; specifically for someone like me who were trying to aim for the leaderboard.