First off how NICE AND HELPFUL of you to do this thread and your actually keeping up!!! Thats awesome. I have 16 4.5wk old chicks. My first batch hatching myself, with new batches coming. But this being my 1st self hatched group that I am watching and studying and trying to really learn a lot from. I can't imagine bombarding you with 16 photos so instead a question. All of my chicks have waddle development, I sort of expected the cockerels to have waddle development first before pullets. Now I'm hoping that isn't the case bc otherwise I've got 16 cockerels???? I'm stressing lol. About 2-3 I noticed some pinking/darkening in the waddles so I feel confident those 3 are likely cockerels with more sure to come. But is waddle development at 4.5 weeks normal in pullets?? Also not sure if important but they are all orpingtons. Again thanks for all the help you are providing