I brooded my turkeys with the chicks. Last year my BBW turkey grew up with a Houdan cockerel and three silkies (until process time for the Houdan and BBW). Ducks are just so hardy and messy.
This year I traded some of my Hatchery Surprise chicks for some broilers. The broilers are 4 weeks old, the surprise chicks are 4.5 weeks old--of course the broilers are twice as big as the other chicks. However, the ducks are twice as big as the broilers. I say, forget broilers, I'm going to start ordering Pekins to process--they're cuter, healthier and tastier. Broilers are a disgusting mess. I don't even want to know they exist.