A layer built to stay lean and busy
A Khaki Campbell duck is an athlete among ducks, bred to forage actively and lay prolifically on a modest ration. That efficiency is exactly why overfeeding sneaks up: feed a Campbell like a heavy table breed and she converts the surplus into abdominal fat rather than eggs. A correctly fed Campbell looks upright and trim, moves with a quick, purposeful stride, and keeps a defined keel when handled. When the ration creeps up, the breed's whole character, busy, light, and alert, starts to fade.
Weight and movement changes in a Campbell
Pick up a Khaki Campbell and feel along her keel bone: thick padding on either side, so the bone sits in a valley, means she is carrying too much. From above and behind, an overfed Campbell widens noticeably, her belly swings low as she walks, and she rocks side to side instead of stepping out smartly. She rests more, preens by the feeder instead of ranging for insects and greens, and may struggle up ramps into the house that she once took at a run. Compare her with flockmates of the same age; a single fat Campbell often guards the feeder, while a whole heavy pen points to the ration itself.
The laying record is a feeding gauge
Egg numbers give a Khaki Campbell owner unusually honest feedback about feeding. A Campbell in lay who slows sharply while eating heartily, with no change in daylight, housing, or health, is a candidate for over-condition, since fat hens and ducks of laying breeds commonly drop production. Soft or misshapen eggs alongside weight gain suggest the balance of the diet, not just its quantity, has drifted, especially if treats and scratch grains have displaced proper layer feed. Track lay per pen alongside feed offered for a few weeks; the two lines usually explain each other.
Treats and the free-range trap
Most Campbell overfeeding arrives as extras rather than in the main feed. Bread, kitchen scraps, and generous handfuls of grain scattered for the fun of watching them feed can equal a second meal, and ducks are expert at training every family member to offer one. Free range does not cancel this out, because a duck already full of grain forages half-heartedly and still eats her treats. Audit a full day honestly: write down everything the pen receives from everyone, and the surplus usually identifies itself.
Slimming a Campbell pen safely
Reduce a Khaki Campbell pen's feed by trimming treats and scratch first, keeping a proper layer ration available in measured amounts during lay. Spread feed times so the ducks range and forage between them, scatter greens rather than grain for enrichment, and make them walk to water and shelter across the pen. Weigh or condition-feel a couple of birds monthly, because duck fat is easy to miss under waterproof feathers until it is advanced. Seek veterinary advice if a Campbell stops laying while straining, develops a swollen abdomen, breathes with effort, or goes lame, as egg-related and joint problems in an overweight duck need prompt attention.
Logging the pen's measured feed and a monthly keel check for the Campbells in KinsLe Care Teams keeps treats and top-ups from quietly rebuilding the ration you trimmed.