Chan Chia-lung explains that this discovery, placed alongside the massive migration in April and May, proves that Chunan is a major breeding place of double-branded crows, and, as opposed to the overwintering valleys, provides a habitat where they can live out al stages of their life cycle. "
詹家龍表示，這個發現對照當年 4、5 月間的大遷徙現象，印證竹南是斯氏紫斑蝶的繁殖熱點，也是有別於越冬型蝶谷的「生態型蝶谷」。