Well, my batch of nine are 8 weeks old now (holy cow, where'd the time go?!) and I still don't have any red vent feathers. I had thought that two of them were getting red vent feathers a few weeks ago, but now that I checked again, there's nothing. I have a few slates/smokies/ivories, but the cinnamons and the two unknowns should have red vents if they're males by now. I can't even find a picture of a regular cinnamon male to try to compare... Wait, did finally find a pic of a pair of regular cinnamons. The males have bibs, but I don't see red vents. My ivories have bibs now, so shouldn't my cinnies have bibs (or at least the start of a bib) if they're males?