a rare visitor from australian lakes
- Size
- Length: 38-45 cm, Weight: 300-500 g
- Lifespan
- 8-10 years
- Diet
- Carnivorous and filter-feeding. Feeds on zooplankton small crustaceans and aquatic insects. Filters water through lamellae in bill. Spins to create feeding vortex.
- Habitat
- Freshwater lakes swamps and wetlands. Prefers open water with abundant zooplankton. Often found in large flocks on ephemeral wetlands in Australia and NZ.
- Range
- Native to Australia. In New Zealand a rare vagrant to the North Island occasionally the northern South Island during drought years in Australia.
- Endemism
- Visitor
- Main Threats
- No significant threats in New Zealand due to rarity. In Australia threatened by wetland drainage and prolonged drought affecting breeding success and survival.
- Population
- Common and widespread in Australia. In New Zealand a rare vagrant with most records from the North Island particularly during drought years in Australia.
- Conservation Status
- data_deficient
- Human Risk
- harmless
- Handling Note
- native waterfowl, do not approach or disturb
- Conservation Note
- Rare vagrant duck; not assessed for conservation status in New Zealand.
- Te Ao Māori
- The pink-eared duck has no recognised Māori name. It is a rare vagrant rather than a resident species. It belongs to the wider family of ducks known as pārera that Māori knew as birds of the wetlands. These native relatives were part of the freshwater ecosystem. The unusual bill and feeding behaviour of the pink-eared duck would have made it a bird of note. Its rare appearances were likely recorded in oral tradition. The bird remains an outsider in these spaces. It lacks the deep ancestral connections of native fauna. It is observed but not named. The duck is a temporary presence in the landscape. It passes through without leaving a trace.
The pink-eared duck has a bill shaped like a shovel and a pink spot on its head. It is one of the strangest ducks in the world. The bill is broad and flattened fringed with fine lamellae that strain plankton from water. It looks like a spoonbill crossed with a duck. The effect is bizarre. The bird does not care. This visual distinction sets it apart from all other waterfowl. It is a specialist in a generalist world.
The plumage is barred brown and white with a dark eye patch and a pink spot behind the eye. That pink spot is the 'ear'. It fades when the bird is not breeding. It brightens in spring. A signal. A display. A promise. The colour marks readiness. It signals availability to potential mates. The rest of the year the bird blends into the reeds. Camouflage takes precedence over show.
Feeding involves zooplankton small crustaceans and aquatic insects. The duck swims with its bill open filtering water. It also spins in circles creating a vortex that brings food to the surface. A clever trick. It saves energy. This behaviour allows it to exploit resources other birds cannot reach. Efficiency drives the method. The call is a soft chattering 'cheep-cheep' often given in flight. Flocks call constantly as they move across the water. The sound marks the group. It signals activity in the shallows.
In New Zealand these birds are rare vagrants. Most records come from the North Island. Lake Ellesmere the Firth of Thames and the Wairarapa wetlands host occasional visitors. Birds have crossed the Tasman from Australia. They usually arrive during drought years when Australian wetlands are dry. The pressure of scarcity pushes them east. In New Zealand it is an accident. A bird that took a wrong turn and ended up on the wrong side of the Tasman. It feeds. It rests. It moves on.
The pink-eared duck breeds in Australia. Nesting happens in tree hollows near water. The nest is lined with down. Five to seven eggs are laid. The female incubates alone. The ducklings leave the nest within hours. They follow the female to water. Independence comes quickly. The species is nomadic. It follows the rain. It goes where the water is. It does not stay in one place. This mobility defines its existence. Stability is not an option.
The pink-eared duck is one of the most distinctive ducks in the world. It has no close relatives. It stands alone. The bill is the giveaway. No other duck in New Zealand has a bill like this. It is specialised for a specialised diet. The bird is a creature of ephemeral wetlands. It goes where the water goes. It follows the rain. No significant threats exist in New Zealand due to rarity. In Australia wetland drainage and prolonged drought pose risks. But the global population remains secure. Here it remains a transient guest. It carries on.