This is my first year raising chicks. We bought 4 Rhode Island Reds, 4 Red Rock pullets, 3 Silver Laced Wyandottes, and 6 Cornish Rock (I died). The Red Rock pullets and the 3 of the Cornish Rock chicks are growing very quickly, feathering out nicely already, we bought them from Tractor Supply about a week and a half ago. 2 of the supposed Cornish Rocks look different and are still small fluffy chicks like the RI Reds and Wyandottes. They are white and are developing dark feathers on their wings only. Any guesses as to what they really are?