Smaug foi acordado por uma noz que bateu na montanha?

Os hobbits são capazes de se mover com extrema cautela quando assim o desejarem, suficientemente silenciosamente para este trabalho. Aqui está uma descrição do livro:

But at any rate hobbits can move quietly in woods, absolutely quietly. They take a pride in it, and Bilbo had sniffed more than once at what he called "all this dwarvish racket," as they went along, though I don't sup-pose you or I would notice anything at all on a windy night, not if the whole cavalcade had passed two feet off. As for Bilbo walking primly towards the red light, I don't suppose even a weasel would have stirred a whisker at it. - The Hobbit: Chapter 2 - Roast Mutton

[Smaug] had passed from an uneasy dream (in which a warrior, altogether insignificant in size but provided with a bitter sword and great courage, figured most unpleasantly) to a doze, and from a doze to wide waking. There was a breath of strange air in his cave. Could there be a draught from that little hole? He had never felt quite happy about it, though was so small, and now he glared at it in suspicion an wondered why he had never blocked it up. Of late he had half fancied he had caught the dim echoes of a knocking sound from far above that came down through it to his lair. - The Hobbit: Chapter 12 - Inside Information

O filme usa o toque do pássaro como uma ilustração da hiperavaliação de Smaug, mas se tivermos que encaixá-lo em uma explicação razoável no mundo, então você pode tentar algo como o túnel sendo uma câmara de ressonância que amplifica as batidas do pássaro. / p>     

O diretor Peter Jackson e o roteirista sênior Philippa Boyens discutem a cena com detalhes consideráveis na Extended Edition "Commentary do cineasta ".

Eles explicitamente afirmam que o dragão Smaug foi de fato acordado pela batida da noz

_{Transcrição minha:}

PB : The, uh, reason to use the Thrush was because we wanted the knocking to push us inside...to the mountain. It was picking up on the Moon-runes and the prophecy that's told in the Moon-runes and the thrush knocking and that knocking awakening the dragon. And it won't be the last time that you see that thrush perhaps...

Isso se encaixa muito bem com a profecia que eles ouviram anteriormente no filme, que afirmou que eles precisavam ...

...Stand by the grey stone when the thrush knocks and the setting sun, with the last light of Durin's day will shine upon the keyhole.

Quanto a como Bilbo deveria se infiltrar na caverna sem acordar o dragão, essa é a razão exata pela qual o contrataram como ladrão. Gandalf repetidamente enfatizou sua discrição.