High and low yield ducks identify
High-yielding ducks are lively and vigorous, and they are stout and fertile, with late feather changes, short moulting times, and low frequency. Low-yielding ducks have early feathering, long moulting times, multiple times, greedy sleep, and light long fat;
Eggshells produced by high-yielding ducks are hard, oval and shiny; low-yield ducks produce soft-shelled eggs and misshapen eggs;
When the duck neck is lifted, if the duck's feet are stretched downwards and the toes are not stretched, they are high-yielding ducks; otherwise they are low-yielding ducks;
High-yield ducks have prominent eyes and eyes, long and wide mouths, long necks, large backs, neat and plumy feathers, and loose and moist cloacaes; low-yielding ducks have fine, sunken eyes, large heads and short necks, flat tip, narrow backs, and feathers. Loosing, Cloaca tightly wrinkled and dry.
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