My female muscovy is now 2 weeks shy of being 3 months old. I was under the impression that they are full size by 3 months but I dont know how that could be since mine is still very small. Around what age are muscovies full sized and stop growing? I was also wondering how old my female should be before I put her in with my male. My drake weighs almost 16 pounds and I dont want him to crush her if he tries to breed her.