I'm new to backyard ducks. We recently moved to a tiny farm (2 stall barn, 3.3 acres). We added four ducklings to our family (ordered through our local farm & feed store). We now have 2 cayuga ducklings and 2 black and white magpie ducklings. Unfortunately, it looks like one of our cayugas may be crested. He is in the 3rd photo. Am I correct that he is crested? I have read is a genetic defect that leads to higher mortality and higher risk for injury. Is there anything special I should be doing to take care of this duckling? I briefly searched for info, and saw several warnings about crested ducks - but no specifics about what to do differently if you have one. Any advice would be appreciated!