Golden feathers on hens neck will be silver to white with balance of body appearing almost as your hens shown except up close the small areas of brown on a given feather will appear greyish making for a slight silver cast.
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Your silver birchen stag is a pretty good approximation of what the crow-winged brown red will appear with one copy of the silver allele except the shoulders will be yellowish almost like on a golden ducking. Going homozygous for silver allele will give effectively the same as shown with stag above with no trace of red / yellow even on shoulder.