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Hi Carolyn an average life span is 6-12years.Your duck may just be showing signs of age and limping is a common problem for pekin ducks, not to worry it will heal over time.

I have 2 pekin ducks that are 6 years old. This entire time ive assumed they were both drakes because they have never layed eggs. Though i have always suspected that one of them is a female because she is smaller than the other and she is always bullied and pecked at on the neck. But recently i have noticed that she is getting fatter and finding it difficult to walk because she is bigger now. Is it possible that she may be laying her first eggs at such a late stage?

so what is the life span of a peking duck? My mom has a 7 or 8 year old that may be showing signs of age or perhaps is ill....he has a problem wit his quack and walking....would like to know the answer if someone should know.