Might be assimilate isn't guilty of it though.
Even in 3DS Max, it looks very segmented when it is segmented.
I don't know if there is a way a model can be segmented and still look like one piece. This way, it's not about the seams of the texture, only about the visible seams of the segmentation - if you'd weld them together, it wouldn't look segmented. I think that's the final big mystery before this starts seriously looking great! I see other models have hid such seams under clothing and the likes, but this duck is naked, it's just more natural for it.