As he further developed his particular style, Quiroga evolved into realistic portraits (often anguished and desperate) of the wild nature around him in Misiones: the jungle, the river, wildlife, climate, and terrain make up the scaffolding and scenery in which his characters move, suffer, and often die.
När han ytterligare utvecklade sin speciella stil skapade Quiroga realistiska porträtt (ofta ångestfyllda och desperata) av den vilda naturen runt honom i Misiones: djungeln, floden, djurlivet, klimatet och terrängen bildar sceneriet där hans figurer agerar, lider, samt ofta dör.