I just collected data for the first time on my oldest group of Silver Gray Dorkings from P. Allen Smith's line. These birds will ultimately be part of my Christmas Capon project. At 4 weeks there is a clear winner and loser at 12 and 9 ounces. The leader appears to be a cockerel and is consistently tops on ever marker I assessed from head width to body depth. I don't think I'd ever have ever noticed the actual differences in chicks without a check list and the guidelines to evaluation from the Livestock Conservancy, but the variation is pretty big even in a tiny group of 5. The second place chick seems to be a pullet and also weighed in at 12 ounces although markers varied a bit from the #1 chick. She (I'm assuming) had a slightly shorter back and slightly shorter keel bone but more heart girth than the chick I'm calling #1. I'll be collecting data on a monthly basis for each group of birds and reporting back to you all. My next groups will be 10 White Dorkings and 15 New Hamps and a second and a second group of 15 Silver Gray Dorkings following that.
I've also got Marans which I'm not tracking formally but will note that I've already banded two for culling at about 7 weeks because they are feathering in a full month behind the others in their group. The cockerel will be practice for caponizing and the pullet will end up in the general egg laying flock. Nothing going to waist here.
Best Regards,
Anthony