In our canary world there are many color varieties, and they are usually all represented at our exhibitions. However, the gray wing (grey wing) is a factor that many breeders do not or hardly dare to use — it is a very difficult and unpredictable factor. Although grey-winged birds do occur, they are certainly not found in large numbers. Yet there are growers who exhibit beautiful specimens of it, and I personally have a lot of admiration for them. The Greywing Factor
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