Norway Rat
The Norway rat, also known as the brown rat, is a large, burrowing rodent that was introduced to New Zealand on European ships. It is less arboreal than the ship rat but can still climb trees to access bird nests. Norway rats are commonly found in urban areas, farmland, and coastal environments.
Impact on Native Wildlife
Norway rats prey on eggs and chicks of ground-nesting birds and can also take small adult birds. They consume large quantities of invertebrates and compete with native species for food. In coastal areas, they are a significant threat to nesting seabirds.
Signs to Look For
Large droppings, gnaw marks on wood and plastic, burrow entrances, and footprints in tracking tunnels. They are often seen scavenging in urban areas at night.
Did you know?
Norway rats are excellent swimmers and can survive for short periods in water. They can also climb vertical surfaces, making them a threat to birds nesting in trees and shrubs.
Spotted a Norway Rat?
Report your sighting and help us track predator activity in the area.
Report a Sighting