Cygnets, the young of swans, take about a fortnight to form bonds with their parents. That's a lot longer than other similar species.
Alison Campbell is an expert in black swan behaviour. She spent a lot of time swan-watching from a hide among the raupo at the edge of a dune lake, but couldn't see the very young cygnets behaviour because they spent a lot of time hidden away.
So she raised a clutch of cygnets in captivity, you can see them in the gallery below.