Hi countrygurl
There is a old story on how the Iowa Blue was developed. A White Leghorn hen went broody under a building and when she emerged with a clutch of chicks, they were like none anyone had seen before. Some of the chicks were colored solid chestnut, but others looked like pheasant chicks, with light yellow, horizontal stripes on their chins, and black stripes down their backs. Old-timers familiar with the breed would tell the tale that the birds were sired by a pheasant. There are others that say the Campines and Plymouth Rocks probably went into its development.
There is a breed by the name of Norfolk Grey from England that is very similar in size & color to the Iowa Blue. It is said they were created by crossing Birchen Old English Games and Partridge Wyandottes.
Long Horn Poultry Farm