Hi! I have four silkie chicks that are 15 weeks old this past monday (oct. 29, 2012) and i'm trying to figure out if they're boys or girls. from what i'm gathering, i have 3 boys and 1 girl, but i wanted your opinions. (the three supposed boys also have bumps where spurs look like might develop and the other supposed girl doesn't) I bought them from a mennonite farm that specialized in just silkies and one other kind of chicken, but they don't sex them. we just picked 4 from a whole clutch of chicks. Thanks a bunch for your help!