"We basically needed to clean him up, because in the process of the egg rolling and being torn by the digger there was an awful lot of dirt wedged in the shell," she said.
Other than the initial clean up, Whisker recovered well.
"He's a really bright chick, he got on to food really well."
She said she had never seen such a remarkable recovery.
Ms Bean said it was an example of how kiwis can be saved if people call the experts at Kiwi Encounter as soon as they find an egg, chick or adult kiwi in distress.
Whisker has been released into a "kiwi creche" at the Whinray Reserve in Motu, a 2ha reserve for young kiwis.
In a few weeks time the kiwi will move to its new home in the bigger reserve, where it will be safe from predators.
