Heraldry is like a big fancy puzzle with lots of different pictures and colors. It started a long time ago in Europe when knights wanted to show off who they were and where they came from.
Now New Zealand has their own heraldry, which is a way for them to show off their history and important things about their land and people.
One really important symbol in New Zealand heraldry is the silver fern. It's a plant that grows in New Zealand and it's on the flag and the coat of arms.
Other symbols include a kiwi bird, a Maori warrior, and a crown to show that New Zealand is part of the British monarchy.
When you put all these symbols together, they create a special picture that represents New Zealand and its history. It's like a secret code that helps people know more about the country just by looking at the picture.