After much searching, I found the nest of the garden ducks. Duck nests are hard to find because the ducks cover them when they leave. With the garden ducks, there are just so many places they can hide a nest. However the ducks at the pond have acres to hide their nests.
The previous nest I found of the garden ducks had over twenty eggs. So did this one. Which means that around the pond, with five duck hens, there could easily be a hundred to several hundred eggs waiting for the duck hens to start brooding. The race is on to find the nests before a hundred or more ducklings hatch.