Different.

Thats one way to kill a bird I would of never thought of...

add

instructions.
Simple but funny.

meh...

pointless.... try at least being able to aim, as it is it is pretty much just random clicking... add scoring too

Blah

Not bad, but could use some improvements. The game play is too slow, gets boring pretty quickly. Also try adding a scoring element, with extra points for killing multiple birds at a time.

Hm..

Theres not much you could have done better to this game.

I gave it a 7 because the concept is simple but repititive. Its a good game, dont get me wrong, and you did it very well. There is only one thing to do though.

Next time if you just improve the concept it will be fine and probably get a much better score.