I have 2 chicks that are now 6 weeks old. A friend of mine looked at them and noticed they both had, on the back of each leg a little bump. She said the bumps were the beginning development of "spurs" which, she said means they are both roosters. Can anyone confirm that for me as fact? OR - below are photos of them at 2 and1/2 weeks old. Any guesses by looking at their tails??? Thanks!!