Prática de Shadowing: The real reason dodo birds went extinct - Leon Claessens - Aprenda a falar inglês com o YouTube

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Dodos are commonly considered brainless, blundering birds that were poorly adapted and doomed to die off, making their human-mediated extinction effortless and inevitable.
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Dodos are commonly considered brainless, blundering birds that were poorly adapted and doomed to die off, making their human-mediated extinction effortless and inevitable.
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But that's not the case.
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So, what were dodos actually like? And what really caused their downfall?
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Let's start at their origin.
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Okay, rewinding more than 20 million years, some tropical pigeons from Southeast Asia voyaged across the Indian Ocean, perhaps by gradually journeying from island to island.
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Eventually, their descendants came to a remote archipelago east of Madagascar.
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Those that settled likely diversified over time.
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Then, about 8 million years ago, an underwater volcano formed another island on the chain, which would come to be known as Mauritius.
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Some of the birds populated this new island, too, and down the line, dodos emerged as a distinct species.
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They shared Mauritius with bats, lizards, giant tortoises, and other birds.
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The closest large predators were held back by about 800 kilometers of ocean, so getting murdered was basically a non-issue.
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Without the need for defensive adaptations, like flight, expending energy on them would have been wasteful.
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So, as with the kākāpōs of New Zealand and the cormorants of the Galápagos, their flight muscles shrank.
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Dodos probably nested on the island's forest floor, feasting on fruits and seeds.
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Reaching just under a meter tall, they were among the island's largest animals.
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And they were well-adapted to their environment, which could fluctuate between extreme dry and wet conditions.
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They also survived some major disruptions.
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Around 4,300 years ago, a megadrought caused waves of mass mortality events on Mauritius.
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Fresh water grew scarce and lakes likely grew saltier and became treacherous traps.
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This lasted for around 150 years.
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However, dodos prevailed... until a few millennia later, when everything changed— quickly.
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In 1598, Dutch sailors came ashore on Mauritius, and the island soon became a welcome stopover for their trade ships.
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The sailors described natural wonders, including large numbers of birds twice as big as swans and tortoises with shells huge enough to fit 10 men.
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Mauritian animals hadn't evolved to fear being hunted by humans, so they were an easy catch.
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Sailors ate some dodos, but this alone didn't cause their doom.
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The Dutch sailors came with company.
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They brought macaques that were probably pets.
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They released goats and pigs on the island to establish food sources.
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And at some point, sailors also inadvertently introduced rats.
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It's thought that goats and pigs grazed and rooted through the forest understory, which dodos lived in; pigs, macaques, and rats preyed on dodo eggs and chicks; and all of them competed with dodos for resources.
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Dodos were last seen less than a century after Dutch arrival.
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At the time, people didn't recognize that species could disappear.
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It wasn't until a century later, in the 1790s, that a scientist conclusively demonstrated the concept of extinction.
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By then, many thought dodos were fake.
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But discoveries from digs and sparse remains helped confirm their existence.
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Nevertheless, representations of dodos were misleading.
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One popular natural history text of the late 1700s characterized them as stupid, voracious, and grotesque.
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Once Lewis Carroll included a dodo in "Alice's Adventures in Wonderland" in 1865, the birds quickly amassed popularity.
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But dodos continued being framed as inept, clumsy, lazy, and unfit for survival in scholarly works, satirical magazines, and children's poems alike.
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And yet, there's no evidence that dodos were less intelligent than their relatives.
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The dodo's brain size relative to its body was similar to that of other pigeons.
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And especially rotund dodo depictions are misleading.
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They may have been inspired by what dodos looked like during mating displays or in captivity— or they were just poor artistic renderings.
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Scientists think dodos were fairly muscular birds.
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All in all, the dodo was, in fact, a survivor that withstood major natural disasters and thrived on its island home.
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It simply wasn't prepared for a sudden onslaught of invasive species.
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And neither were other endemic Mauritian animals, including raven parrots, fruit bats, and giant tortoises.
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In the aftermath, perhaps it was easier to declare the dodo's extinction the result of its personal failing than to admit it was a human one.

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Sobre Esta Aula

Nesta aula, você terá a oportunidade de praticar a sua conversação em inglês ao explorar a fascinante história da extinção do pássaro dodo. Ao ouvir e repetir o conteúdo, você não só melhorará a sua pronúncia em inglês, mas também expandirá o seu vocabulário ao aprender sobre a biodiversidade e a interação entre humanos e animais. Através do shadow speech, você poderá imitar a fala do apresentador, alinhando sua entonação e ritmo com o áudio. Este exercício é uma ótima maneira de aprender inglês com YouTube, aproveitando vídeos informativos que tornam o aprendizado mais interessante e contextualizado.

Vocabulário e Frases Chave

  • Dodo: um pássaro extinto que vivia em Maurício.
  • Extinção: o desaparecimento de uma espécie.
  • Biodiversidade: a variedade de vida em um ecossistema.
  • Predadores: animais que caçam para se alimentar.
  • Adaptar: mudar-se para sobreviver em um ambiente.
  • Invasores: espécies não nativas que ameaçam o equilíbrio local.
  • Maurício: uma ilha no Oceano Índico, lar do dodo.
  • Sobrevivente: alguém ou algo que continua a viver apesar das dificuldades.

Dicas de Prática

Para aproveitar ao máximo esta prática de conversação em inglês, siga estas dicas:

  • Escute atentamente: Preste atenção ao tom e à velocidade do apresentador. O ritmo é bastante envolvente, então tente acompanhar sem apressar sua fala.
  • Repita em voz alta: Use o shadow speech para imitar o que ouve. Isso não só ajuda na memória, mas também em melhorar a pronúncia em inglês.
  • Pause e resuma: Depois de ouvir um trecho, pause o vídeo e resuma o que você aprendeu em inglês. Isso reforça a compreensão e a retenção do conteúdo.
  • Grave sua voz: Ouça suas gravações e compare com a do vídeo. Isso permitirá identificar áreas em que você pode melhorar.
  • Interaja com outros: Discuta o vídeo com amigos ou participe de grupos de estudo online para praticar inglês falado. Isso enriquecerá sua experiência de aprendizado.

Utilizando essas abordagens, você consegue aprimorar sua fluência e habilidades de fala de forma eficaz. Boa prática!

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

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