Special guests include children's favourite characters Batman, Moana and Captain Hook. Hamilton Zoo's founder Murray Powell will officially open the day at 11am and share in the festivities
Mr Powell and his wife Gloria opened the Hilldale Game Park in December 1969 after buying the land the Hamilton Zoo now sits on earlier in the year to continue his successful pheasant raising operation.
By 1979 the Hilldale Game Park had become a registered zoo and in 1981 the Hamilton City Council bought the zoo and the name was changed to Hamilton Zoo.
Hamilton Zoo Operations Manager Catherine Nichols knows the Powells well, having worked at Hamilton Zoo for 17 years.
In 2006 the Hamilton Zoo Conservation Fund was developed to aid in supporting national and international projects by collecting and distributing funds raised from public donations, 10% of revenue from animal encounters and proceeds from special conservation events.
Today the zoo is home to more than 600 native and exotic animals and welcomed just under 140,000 visitors in 2018.