Water Birds Are Specialised for Wetlands
Water birds have unique beaks, feet, and body shapes designed for feeding in specific wetland areas. Their natural diet includes:
- Aquatic insects (macroinvertebrates)
- Algae and pondweed
- Small fish, snails, worms, and other aquatic life
These foods provide the right nutrition at the right time of year.
Human Food Is Not Suitable
Foods like bread may fill birds up but offer little nutrition. Over time, this can cause:
- Malnutrition
- Illness
- Disruption to natural feeding habits
Feeding Can Change Bird Behaviour
Feeding Wild Birds can lead to:
- Dependency on humans
- Aggression between birds and towards people
- Increased risk of predator attacks due to loss of fear
Safety and Environmental Risks
Feeding ducks on private property can:
- Encourage them to cross roads, risking vehicle strikes
- Increase contact with domestic pets
- Attract vermin with uneaten food
Disruption to Natural Cycles
Feeding sites often attract large numbers of birds, leading to:
- Excess droppings that pollute water
- Spread of disease
- Bad smells and insect outbreaks
Impact on Biodiversity
- Common, dominant species benefit most from feeding
- Rare or threatened species get pushed out
Overpopulation Problems
Too many birds in one area can cause:
- Overgrazing
- Disease outbreaks
- Loss of chicks
- Competition for nesting grounds
Rotting Food Harms Wetlands
Leftover bread and food can:
- Release phosphates, causing nutrient build-up (eutrophication)
- Trigger algal blooms in summer
- Lead to deadly botulism outbreaks (e.g., in 1999, over 1,000 birds dies in Mary Carrol Park Wetlands during a one-week outbreak)
Rotting food also reduces oxygen in the water, which can kill fill and other aquatic animals.
What can you do instead?
There are other ways you can interact with, and help our native wildlife:
- Install bird baths and grow locally native plants to provide natural food and water for wildlife
- Observe wildlife from a distance: It is always better to observe wildlife from a safe distance and appreciate them in their natural habitat. This will help prevent the disturbance of their natural behaviour and avoid and potential conflicts.
- Keep dogs on short leads when walking them around waterbodies and near bushland areas to reduce the risk of negative interaction.
- Keep cats inside to reduce predation on native wildlife.
If you continue to feed the waterbirds, please consider the following:
- Feed them healthy foods such as small amounts of fresh or frozen corn (removed from the cob), peas, lettuce, oats, bird seed, or cut vegetables.
- Feed them a snack, not a meal - be aware that you may not be the only person feeding them!