So I'm not sure if this has been done, but I thought id use my (very pet quality) silkie chickadees to try a note qualities of sex as they grow. Chicks are currently 5 weeks, there are 7 chicks. This is purely for research and maybe this can help some people out? I'll start by posting the just hatched pics, then pics of 2-3 weeks and my photos yesterday. Feel free to guess the sexes for yourself. It's always fun. These are the hatched pics.