The children made a gold coin donation before visiting the attraction. All money raised will go to kiwi conservation.
So far this season 13 chicks have hatched and there are a further 25 eggs in incubation. Save Kiwi Week runs until Sunday and is organised by Kiwis for kiwi, a charitable trust dedicated to kiwi conservation.
Meanwhile, international conglomerate Bridgestone Corporation has renewed sponsorship to help the kiwi breeding programme at Rainbow Springs.
Bridgestone's commitment included funding for more incubators, scales and other equipment for kiwi breeding programmes each year, and to help attract more visitors to the wildlife park established in 1932.
Rainbow Springs kiwi husbandry manager Claire Travers said the renewed sponsorship was welcomed.
"It'll be great having another incubator for more eggs to hatch in," she said.
"Without the help of organisations like Bridgestone, kiwi could be extinct within our lifetime.
Over 100 kiwi chicks are raised at the park annually.