The first one I went to people left with cases. I went to another kmart after that and all the cases and most of the cars were still there. Looked like someone picked out all the T hunts and what not and left the rest.
They are very common here. I grabbed a few and even swung by another Kmart I passed today and there were tons of them. I bought 4 or 5 more (still a bunch left there) to open them for the cards. The green stripe is only on the international cards. The ones here are just 2012 new models and yellow stripe stating "angry birds minion pig" not the HW imagination that is on the intl.
I have a bunch of loose ones in the kids bucket and a few more carded if anyone wants or needs some. I haven't yet found the red birds. I just saw a new case at Wally's and it had 6 or so pigs in it. I left 4 for others. Grabbed 2 to finish out my mail ins cards.
I feel they will be hard to find on the pegs as all the kids and their mothers want one. I will have to find some for the nieces and nephews. I did not even know what they were until they explained it to me.