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SpaghettiPhoto - Cygnus atratus [ENG/ITA] by spaghettiscience

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· @spaghettiscience · (edited)
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SpaghettiPhoto - Cygnus atratus [ENG/ITA]
<center>![1.jpg](https://cdn.steemitimages.com/DQmXq4nZqidAy5MishS4yJAjS1SKHPXeRNMYjDph51z4Xjk/1.jpg)</center> | <center>![2.png](https://cdn.steemitimages.com/DQmZmmSrvmpaQXbfVmUk2rzx2hkZBhm2M93YGhVbVUWJGjP/2.png)</center>
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*Cygnus atratus*, commonly known as the **black swan**, is an aquatic bird of the family Anatidae, closely related to the best known swan, Cygnus olor. It is native to Australia, but since it is an important animal from the ornamental point of view, it has been imported into numerous parks all over the world, and today it is common to find big colonies in the wild, formed by individuals escaped from their wildlife centers.

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Il *Cygnus atratus*, comunemente noto come **cigno nero**, è un uccello acquatico della famiglia delle Anatidae, strettamente imparentato con il più conosciuto cigno reale, Cygnus olor. È originario dell'Australia, ma trattandosi di un animale importante dal punto di vista ornamentale, è stato importato in numerosi parchi in tutto il mondo, e oggi è comune trovare in natura grandi colonie formate da individui fuggiti proprio dai parchi faunistici.

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<center>![largeDSC_0153.jpg](https://files.steempeak.com/file/steempeak/spaghettiscience/4PzfY4qA-large-DSC_0153.jpg)
<sub>ORIGINAL WORK BY SPAGHETTISCIENCE
If you need this or other images, just ask!</sub></center>

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Contrary to popular belief, even the black swan, like all other swans, does not eat fish; in fact, it is a completely vegetarian animal. His diet is mainly composed of algae, which is able to recover even from deep waters. Precisely for this reason, this swan finds its ideal habitat in lakes and basins characterized by brackish water, where the proliferation of algae is favored. Brackish water ecosystems, especially in Australia, easily disappear during the hot season, and groups of swans usually migrate in group in search of more suitable spaces.

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Contrariamente a quanto si pensa, anche il cigno nero, come tutti gli altri cigni, non mangia pesce; in effetti, è un animale completamente vegetariano. La sua dieta è composta principalmente da alghe, che è in grado di recuperare anche dalle acque profonde. Proprio per questo motivo, questo cigno trova il suo habitat ideale in laghi e bacini caratterizzati da acque salmastre, dove è favorita la proliferazione delle alghe. Gli ecosistemi delle acque salmastre, specialmente in Australia, scompaiono facilmente durante la stagione calda, e ebirnu gruppi di cigni migrano alla ricerca di spazi più adatti.

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<center>![largeDSC_0155.jpg](https://files.steempeak.com/file/steempeak/spaghettiscience/LZCQHFeS-large-DSC_0155.jpg)
<sub>ORIGINAL WORK BY SPAGHETTISCIENCE
If you need this or other images, just ask!</sub></center>

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From an ethological point of view, the black swan prefers to live in large colonies, sometimes mixing with other swan species; it is in fact a fairly sociable animal, albeit sometimes wary.

It is a monogamous species, although infidelity is not infrequent. Both parents take care of the offspring, starting from the construction of the nest (which is reused the following season) up to the actual breeding. Moreover, homosexual couples, mainly composed of two males, have been observed several times, and it is believed that this can happen in particular following the disappearance of the partner of the other sex during the breeding of the offspring.

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Da un punto di vista etologico, il cigno nero preferisce vivere in grandi colonie, a volte mescolandosi con altre specie di cigni; è in effetti un animale abbastanza socievole, anche se a volte diffidente.

È una specie monogama, sebbene l'infedeltà non sia infrequente. Entrambi i genitori si prendono cura della prole, a partire dalla costruzione del nido (che viene riutilizzato nella stagione successiva) fino all'allevamento vero e proprio. Inoltre, le coppie omosessuali, composte principalmente da due maschi, sono state osservate più volte in natura, e si ritiene che ciò possa accadere in particolar modo in seguito alla scomparsa del partner dell'altro sesso durante l'allevamento della prole.

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### Curiosity
In Australia, the black swan was hunted by the aborigines: due to its color it was identified as a demonic animal.

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### Curiosità
In Australia, il cigno nero è stato a lungo cacciato dagli aborigeni: per il suo colore, infatti, veniva identificato come un animale demoniaco.

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### <center>IUCN Red List</center>
<center>![512pxStatus_iucn3.1.svg.png](https://files.steempeak.com/file/steempeak/spaghettiscience/uOCFkZwj-512px-Status_iucn3.1.svg.png)
<sub>LC = Least Concern. [Source](https://en.wikipedia.org/wiki/IUCN_Red_List)</sub></center>

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### References
* Monaco Natura Encyclopedia. [Cygnus atratus](https://www.monaconatureencyclopedia.com/cygnus-atratus/).

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<center>This [post](https://www.narrative.org/post/cygnus-atratus) has been also published on Narrative.</center>

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