Silkie
I am not sure exactly what is going on the duck pen, It seems it is always the females that I find down with a leg problem,,, I have not been able to spend much time there the last couple of weeks..... I have caught the scovy boys bullying the pekin though. they seem to think the girls all belong to them
That's the problem. The scovy boys are about triple the weight of the pekin hens but the pekin hens are similar in size to scovy hens so the scovy boys aren't seeing the problem. Stick your pekins over with the chickens temporarily until you get them rehomed.