Riddonkulous

I'm a master of hide-and-seek. Catching me with whiskey is the only thing that works. Drunkenly, I sing the song of your people before I hop away, using my antlers to scare the huntsman into hiding their shins. I am so scarce 'cause I only breed when the sky is right. Milking me is nothing but troublesome, though the stores keep trying to sell you some. Spotting me is a lottery, but if you do, you may win the jackpot.