Una brisa agitó los pulcros setos de Privet Drive, que se disponían silenciosos y ordenados bajo un cielo de color tinta.
- From Harry Potter Y La Piedra Filosofal (copyright de la edición en castellano © Ediciones Salamandra 1999).
The question I have is if "se disponían silenciosos y ordenados" is grammatically correct. From what I understand, what should follow "se disponían" should be adverbs; however, "silenciosos" is an adjective and "ordenados" is present participle forms of "ordenar".
If my understanding of adjectives and adverbs are correct, "silenciosos" should be "en silencio" or "silenciosamente"; and "ordenados" should be either "cuidadosamente" or "con esmero", since, according to spanishdict.com, present participles can't act as an adverb unless in the gerund form, which "ordenados" isn't.
Do please correct me if I'm mistaken. I'm a beginner to Spanish language and need every help I can get.
Thank you very much for your time to everyone who read this post.