Second Chicken: This Chicken can be found if you roll into the box placed in front of the house directly in front of you on the left side of the screen when you first enter the village.
Third Chicken: Behind the gate next to the House of Skulltullas. You can easily get this chicken by throwing a deku Nut at it.
Fourth chicken: When you enter the village, take a left and go up the stairs and then up the next set of stairs. In front of you will be a chicken.
Fifth Chicken: Head to where the woman who wants you to collect her chickens is. There will be one there, frolicing about.
Sixth Chicken: Get on of the previous chickens that you have collected. Go up to the box near the entrance of the Windmill. Throw the chicken onto the box, climb onto the box and then pick up the chicken again. Turn yourself so that you are facing the little fence in front of the box. jump onto the rail with the chicken. Then turn right so that you face the High Fence you can't get over. Center yourself on the rail and then run forward. When Link reaches the end, he will jump and land on the other side of the gate. There is a chicken down below on the ground.
Seventh Chicken: Follow the same instructions for Chicken 6. Then go up the ladder to your right. You'll see a chicken hoping around.