I got an order from Ideal yesterday with 10 blue bantam cochin babies, straight run, and 14 BR or BSL packing peanuts. I "sexed" them using the pendulum method, and will continue to post updates on this thread through the next few weeks. Let's see if this theory works... I threaded a medium-sized needle with sewing thread. One at a time, I held each chick in my hand and held the end of the thread with the needle above the chick's back, as still as I could make it. The needle started to move on its own, circles for girls, and back and forth for boys. I marked all males with a black sharpie on the middle toe on the left foot. I re-tested each chick several times, and my husband also tested each chick, with the same results every time. All 14 BR's are boys. Of the ten cochin babies, 5 are males and 5 are females. Judging by beginnings of wing feathers, there are 6 splash babies, 4 boys and 2 girls. There are 4 blue babies, 1 boy and 3 girls. I also used this method on myself for each of my 6 pregnancies through the years, and it was always right. Last night, I held the needle above the head and then the left wrist of each of my family members, and it swung in a straight line on all of the boys, and swung in a circle for my daughter and me. My husband also tested each of us, and it was right for him every time. I am taking pictures of each chick this morning, marking the test results on each picture. Should I do anything else to make this more "scientific?"