I provide nesting boxes for wild black bellied whistling ducks in my back yard. In one of the boxes this year, four different hens were laying eggs (called egg dumping). One mating pair ended up sitting on the lot and 38 ducklings hatched. All the ducklings bonded to that pair and the big family moseyed off to the local pond.
A few years ago there were only two hens worth of eggs and 21 hatched.
