The endangered Swift Parrot (Lathamus discolor) has to face attacks of the Sugar Glider. The australian team of researchers found out that this mammal destroys the most of all nests. „And that predation was so severe that, on average across mainland Tasmania, only 17 per cent of swift parrot nests were actually successful and all of those failures were as a result of sugar gliders eating the swift parrot, either the females or their eggs or both,” explained Dejan Stojanovic for ABC News. Dejan leads the team and is involved in the research of this issue more than three years.
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According to the results of this study, Sugar Gliders are the only animals which predate theSwift Parot. This impact was increased by the lost of their natural environment as Tasmania is deforested intensively nowadays. “The important part of our research is that we found out that predation is really closely linked to the availability of old growth forests across Tasmania,” Stojanovic said. The reduction of forested areas forces animals to share their living space and that’s not good. In Tasmania the Sugar Glider is considered as an invasive species which was brough there in 1835.
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Swift parrots are nectarivorous like lories. This specialist species is dependent on blossoms of the Tasmanian blue gum (Eucalyptus globulus) which has strongly unbalanced productions of nectar. Only every third year these trees provide sufficient amount of the „sweet water“ for its consumers. More than a half of eucalyptus trees in the southeast Australia and Tasmania was destroyed because of the agriculture, constructions or the wood processing industry. Such limitation of natural food sources has a serious impact on the population size of the Swift Parrot
Source : http://www.parrotsdailynews.com/the-biggest-threat-for-the-endangered-swift-parakeet-the-sweet-marsupial/
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