Discovery Circle Report
While many people enjoy seeing little corellas, large flocks in urban and rural areas cause considerable problems in the warmer months. The most common issues are damage to trees (defoliation), taking grain, and disturbing residents with loud vocalisations. Managing little corellas can be difficult and significant public contention exists regarding their management. Many local councils with a long history of problems with little corellas have invested significant resources into developing strategies for their management. Extensive experience and knowledge of little corellas exists within these agencies and in local communities, but little information sharing or coordination of activities occurs among groups.
No “silver-bullet” or “quick solution” exists to fix the issues caused by little corellas. Our aim was to identify steps, based on research and consultation, to help reduce issues with little corellas. Our focus was on “problem sites” in urban and peri-urban areas, including townships, across South Australia. We used a mixed-methods approach, including:
- A social survey (1,270 respondents)
- Nine community workshops
- Field surveys at 144 little corella sites identified by project participants
- Development of models for little corella habitat suitability and land use preferences
- Synthesis of data into Mental Modeler software, a tool that can be used to understand and educate about little corella management
The full Little Corellas Project Report can be accessed online here: http://www.discoverycircle.org.au/projects/little-corellas/results/
Background on the Little Corella
Little Corellas are an Australian native bird naturally found in parts of South Australia. The range of the Little Corella in South Australia has expanded substantially southwards since the 1920’s. Flocks have been part of the landscape in The Flinders Ranges Council district for many years with numbers steadily increasing. It is believed the range of the Little Corella has increased due to the change in land use that has occurred. The provision of water and undisturbed environment has been favourable to Little Corellas.
What problems are caused by Little Corellas?
Little Corellas can cause problems in town areas when their numbers are high. These problems can vary depending on location and the attitudes of observers. Each year The Flinders Ranges Council receives many calls, emails and letters from residents, businesses and groups regarding Little Corellas. These letters include requests for action on the Little Corella issue and reports of the problems the birds are causing.
- Noise associated with flocks of birds. This includes inability of some residents to be able to relax at home due to the noise, and complaints from customers about bird noise to businesses in affected towns.
- Damage to trees, including native trees and ornamental exotic trees.
- Damage to ovals and recreation areas.
- Litter such as pine cones and small branches on roads, footpaths etc.
- Increased cost to Council, businesses, and residents of cleaning up after birds.
- Damage to buildings and infrastructure, including damage to TV antennas, window seals, vehicles, roof tiles, fencing etc.
- Impact on human health, including depression, anxiety, health issues relating to pollution of water tanks, stress from noise and mess caused by birds.
Typical behaviour and activity of the Little Corella
Knowing how Little Corellas behave will help in planning and undertaking a management program.
The typical daily activity pattern for Little Corellas is to start calling at first light. As the light grows, birds begin to move about the roost trees and calling intensifies. Birds may fly to other trees, often with exposed or dead branches at the top, to catch the first sunlight and bask for a period.
The birds then fly off to commence foraging in a sown crop, a pasture, stubble, or a roadside. The first bout of feeding lasts for a variable period, determined in part by temperature, abundance of food and whether there are young to feed. This can last from half an hour up to four or five hours. Little Corellas then usually return to a resting or loafing site to digest food, preen, play and rest.
During summer, this resting period may last for a number of hours, until the day is cool enough for the birds to resume feeding late in the afternoon.
Little Corellas return to the evening roost site near sunset and are often noisy while settling to roost. On moonlit nights, Little Corellas often call and move about the roost site, flying to other trees on occasion.
When pairs are breeding, they are dispersed over the countryside, where they feed near their nest hollows. During spring Little Corellas are mostly seen in pairs or small flocks. After the young fledge (November usually) they join growing flocks that gather to feed in crop stubbles, slashed paddocks and other, concentrated food sources. This is when large flocks form, comprising young of the year, their parents and non-breeding birds.
These summer aggregations of birds roost communally at traditional sites and tend also to feed in large groups at favourable food sources.
Flocks “accumulate” at such sites by a process known as ‘local enhancement’, whereby birds flying past will change course to join other birds they can see on the ground, feeding. It is not until the autumn break when significant rainfall softens the ground over a wide area, often in April or May that these flocks once again disperse into smaller groups for the winter and feed by digging in the now softer ground for bulbs and corms.
By August, pairs have once again moved close to their nest hollows to feed and prepare for breeding.
Little Corella Action Strategy 2015-2019
The Flinders Ranges Council is undertaking a number of actions to manage Little Corellas. The purpose of these actions is to decrease the negative impact large flocks of Little Corellas are having on some sections of the community.
The Flinders Ranges Council Little Corella Action Strategy was adopted by Council on Tuesday 19 January 2016. The Little Corella Action Strategy can be found here.
Do you need further information?
Council has developed information brochure to help residents understand the impacts of Little Corellas on the community, future actions that Council will be undertaking and what private landholders can do to effectively manage Little Corellas on their land. This brochure is available from the Council office and at Hawker Motors, and is also available on the Council web site here.
Council has developed a brochure on the future actions that Council will be undertaking. This brochure is available from the Council office and at Hawker Motors, and is also available on the Council web site here.
Council has developed a brochure on what private landholders can do to effectively manage Little Corellas on their land. This brochure is available from the Council office and at Hawker Motors, and is also available on the Council web site here.
LITTLE CORELLA SURVEY DATA SHEET
Council has developed a Little Corella Survey Data Sheet. This data sheet is available from the Council office and at Hawker Motors, and is also available on the Council web site here.
Further information on Little Corella behaviour; please contact the Northern and York Natural Resources of the Department of Environment, Water and Natural Resources on on (08) 8638 2351, facsimile (08) 8636 2371 or www.environment.sa.gov.au
Council needs your feedback and ideas
The Flinders Ranges Council is determined to decrease the negative impact Little Corellas are having on residents. To do this Council will review its management actions each year and refine the program to achieve better results.
Feedback from residents and landholders is essential to the review process. Council welcomes all comments from The Flinders Ranges Council district residents.
Information is needed on the following:
1. What impact are Little Corellas having on you?
Describe the impact.
Can you put a monetary value to any damage or benefit?
If it is impacting on lifestyle or health please provide details of how this is happening, who is affected and what the implications of the impact are?
2. Describe any actions you take at your property to manage Little Corellas.
Provide details of any actions you take – action description, impact on bird numbers, and times of day you take these actions. (Survey form is provided)
3. Describe any positive benefits you see with having Little Corellas in the region.
4. Would you support the Department of Environment and Natural Resources issuing a permit to trap and gas Little Corellas?
Let us know if you support this method and why.
5. Do you support the non-lethal actions Council is currently taking to manage Little Corellas?
Please provide any information you have on the apparent effectiveness of current actions.
Do you use any of these methods on your property?
If Little Corella numbers continue to increase what type of action do you feel Council should take?
Please send your feedback and ideas to Council for our consideration