Environment


Indian Mynas

Indian Mynas in Australia

Common Indian Mynas were first brought to Melbourne in 1862 to control insect pests in market gardens. Even though they weren't successful at doing this, they were soon spread around Australia. There are now feral colonies all around Australia.

Originally introduced by humans into Melbourne from Southeast Asia back in 1862 they quickly established themselves. In 1883 they were taken up to Northern Queensland, ostensibly to combat insects in the cane fields! A feral bird and now also a serious pest they are found in most cities and towns along the east coast of Australia in some areas in plague proportions. 

Their natural range is Turkestan to India, Andamans and Sri Lanka. 

Although the body & shape and also beak, eye and leg colour are the same as our own native Noisy Miner that is where the comparison ends. Both male and female Indian Mynahs have a chocolate brown head, neck and throat with a green sheen, the rest of the body is mainly a fawn colour with some white on the tips of their wings and under their tail. Beak, back of eye and legs are yellow.

Why Indian Mynas are a problem

Unlike the Noisy Miner, these birds are scavengers in urban parks, gardens and streets and will eat almost anything surviving well on garbage, scraps, vegetable matter, other birds eggs and even eating young hatchlings and small fledgling birds. They follow humans rather than natural vegetation & seasons. Aggressive in their behaviour and with their numbers growing they are taking over the nesting sites, feeding grounds and airways attacking, displacing and sometimes killing not only our native birds but also small mammals and bats too.

They compete aggressively with native wildlife for nesting hollows, evicting and killing the young of native animals. Examples of animals affected include birds like Kookaburras, Rosellas & Dollar birds, & small mammals like Sugar Gliders & Ringtail Possums.

Indian Mynas invade endangered habitats and further increase the risk of extinction of some endangered native species.

They also can be an economic problem because they damage grain and fruit crops. Mynas can also spread mites and they have the potential to spread disease to people and domestic animals. They can also be a problem in outdoor eating areas as they become fearless about stealing food off people's plates.

Native Miner Vs Indian Mynas

Native Miner Birds

Perhaps the best known native honey-eater in Eastern Australia inhabiting disturbed forest edges and urban gardens which retain a Eucalyptus canopy from southern Tasmania up to the Atherton Tablelands in far north Queensland. 

They don’t venture far past the western side of the Great Dividing Range leaving that to their relatives the Yellow-throated Miner. Both male and female look the same with upper parts a motley grey and wings slightly darker grey with yellow flecks and the under parts are whitish. They have a bright yellow triangular patch just behind their brown eye and their beak and legs are also yellow.

Quite gregarious they live in very territorial groups of around 6 -30 birds combined into a loose colony of up to several hundred. They will unite to mob any predators becoming particularly noisy (hence the name) when ganging up on snakes and goannas and are very successful at driving other birds away.

A communal song of a 2-3 syllable teu-teu-teu to establish their territory can be heard just before sunrise and they will continue to sing, chirp, whistle and chatter through the day as they forage mainly amongst up in bushes and trees through bark and leaves for insects, beetles, ants, wasps, bees, weevils and caterpillars occasionally dropping on to the ground.

They are also nectar and fruit eaters and delight in harvesting from many flowering and fruiting trees and shrubs. Their breeding season is from June-December, where up to 20 metres high in a tree and on her own, the female builds a cup like nest of twigs and grasses softy lined with moths cocoons or wool and bound with animal hair and cobwebs. She lays 2-4 eggs a day apart for staggered hatching and incubates them for 15-16 days. When the chicks have emerged from the egg up to 10 males will come and join in their feeding exceeding up to 50 times an hour. The nestlings take about 16 days to leave the nest and several broods may be laid in one season.

Indian Myna How are they controlled?

An Indian Myna trap was developed by the Australian National University in 2005. Mynas are caught in the trap and can then be euthanased using carbon dioxide.

What the law says about Indian Mynas:

In 2000 Common Indian Mynas were listed by the World Conservation Union (IUCN) as one of the World's 100 Worst Invasive Species.

What we can do

  • Keep a lid on your garbage and compost bin 
  • Feed domestic pets inside if possible 
  • Ensure that poultry pens are mynah proof 
  • Plant native trees & flowering shrubs to attract native birds 
  • Call your local council to report sightings 
  • Obtain a mynah trap from your council 
  • Block holes in roofs and eaves 
  • Keep palms well trimmed. 
  • Avoid planting exotic species such as Cocos Palm, Slash Pine, Radiata Pine and Umbrella Tree as these are preferred Indian Mynah roosting trees. 
  • Removing Indian Mynah birds from Rosella nesting boxes is successful and within a few hours some Rosellas will already have settled back in to lay their eggs!

Source and more information: Pittwater Council and Wires.org


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