About 6 months ago we purchased what we thought were 6 female chickens. Two Black Giants, two Rhode Island Reds and two White Rocks. The lady told us that the way she could tell if they were male or female was by holding them by the neck and if they put up a fight they were MALE, if they didn't they were FEMALE.
Well she was 50% correct. We have three males and three females and we just had our first egg two days ago. We are waiting very impatiently for the next eggs to follow, but so far no go.
Here are a few picsa of the cage that we built and the chickens that we have: