I am usually doing these with a long line waiting and speed is important. You can, however, do some fancier legs if you have the time. Keep in mind that the body is going to be larger than usual and you will need longer legs. The body is a standard bird type body three bubble roll. Second bubble lays back along side the first, same length, and is twisted in where the neck, front legs, and first body bubble all come together.
Third bubble is back long side the other two, same length, and twisted.
The third bubble is then rolled in between the first two to keep it in place and complete the body. I usually rotate the body so that two bubbles are on top and the third is toward the bottom of the legs. You will now know if you made the legs long enough. Back legs are a repeat of the front. I use a simple loop like the front, but experiment and see what you like.