Feet on

 

I love how this kit prety much pushes together. The plastic feet slot into place on the yellow plastic curved things (I don't know that they are called, look at the photo) which also hold the foam circles that act as both wheels and floatation devices. It's all so well designed. 

The head and neck are articulated so they can bob back and forth. Although everything pushes together, I glued the two sides of the head as the halves didn't seem to want to stay aligned properly. ABS glue was required for this, Revell Contacta not being potent enough for this very hard plastic. 

The bobbing action is driven by a fork on the side of the unit being activated by a cam on the wheel, which is why it's important to get them on the right side. To be fair, there is a step in the instructions for each side, even though they are very similar. Another occasion when it pays to double check you have the right parts in your hand before assembly. 

Underneath there is a tail wheel to allow the duck to steer when on land. Another neat bit of design, which incorporates a tiny O ring to keep the until pointing in the direction you set it.