So...of course, my opinion might continue to change...but I do think it is possible that I hatched the cuckoo maran (as I mentioned earlier) but also I'm leaning toward the yellow one as the Light Sussex. It is yellow, no feathers on legs, and the wings are growing in white. The picture below is not mine, but my bird has the same coloring, except its getting white feathers on it tail now. From what I can tell BO get darker a bit, not lighter.