Hey everyone, Novice question here. When I purchased six supposed Australorps from Craigslist, they were all black and white (as expected for black baby lorps). After about a week, one of the chicks started to get white spots, indicative of barring. Eventually, I reposted pictures of him at 3.5 months old, and folks responded affirming my thought he was a cockerel. He also has green plumage coming in, vibrantly colored, and pointed hackle feathers. One of his siblings, who was black up until maybe three weeks ago, started getting rusty colored feathers around her neck. I thought sex links could be sexed at hatch? Mine were all black and white like baby Australorps. Is it because they are likely mixed; is that why I couldn't see any of the other coloring coming through until they were older? Thanks for the upcoming info!