In addition to our three White Rock/RI Red girls, we decided on a whim to pick up some chicks from TSC this year, because our son's getting to be about the age where he can actually experience raising chicks. I asked for 6 laying pullets, and went to get feed and other stuff while the clerk boxed them. Box is marked pullets, but when we got home my wife said she thought she saw him grabbing one from the Cornish X Rock bin.
I don't think these look like Cornish X's due to their stripes, but not really sure what breed they are - maybe Black Sex links? Would love to know your best guess.