3 weeks ago we bought 6 new ducklings. My husband got himself two Rouens from TSC, I got a Magpie and a Cayuga for my birthday from a local farm that gets shipments in (unknown source) and my son and daughter each bought their own ducklings (another Magpie and a Blue Runner) for their 4H program. They are all eating and drinking great, enjoy their time in the water and so far, don't nitpick at one another. We thought we noticed something different about my Magpie, and this week it's definitely been more noticeable. The Rouens are huge, next the Cayuga, Blue Runner and the one Magpie, but mine still looks like she was just hatched. She gets along just fine though, doesn't appear sickly, not sneezing or not eating/drinking. Just super tiny. This is our 2nd year raising a flock, so we're still learning. Are there "runts" when it comes to ducklings? Once I get my son on the bus this morning, I will go snap a picture and post it. Thanks!