No chance of sex linkage- the roo IS barred(look at his tail, also delawares are columbian pattern plus barring), so he will produce barred chicks no matter what breed/color hens he's bred to. The only chance of being able to sex the chicks might be those out of him and cuckoo marans- males might be lighter with bigger head spot.
He seems to be pure for silver, so expect pretty much all variations of black/white chicks. If the sex links are red sex links, those will grow up black/white at first but eventually show some red blush on body and some will seem to start out solid white but also eventually show some red on body as they grow.
At least half of the chicks from naked neck will have naked necks. Possibly all if she is pure for the naked neck gene.
If he's a delaware from production bred lines, most of the chicks should end up dual purpose type- somewhat heavy and generally good layers.
He seems to be pure for silver, so expect pretty much all variations of black/white chicks. If the sex links are red sex links, those will grow up black/white at first but eventually show some red blush on body and some will seem to start out solid white but also eventually show some red on body as they grow.
At least half of the chicks from naked neck will have naked necks. Possibly all if she is pure for the naked neck gene.
If he's a delaware from production bred lines, most of the chicks should end up dual purpose type- somewhat heavy and generally good layers.