Purple-backed Fairy-wren (male)

In 2018, the purple-backed fairy-wren was finally declared a new species, after being incorrectly labelled a Variegated Fairy-wren prior to the new discovery (they look very similar). You can read about the news https://ebird.org/australia/news/2018-ebird-annual-taxonomy-update-aust… "Like other fairywrens, it is notable for its marked sexual dimorphism, males adopting a highly visible breeding plumage of brilliant iridescent blue and chestnut contrasting with black and grey-brown. The brightly coloured crown and ear tufts are prominently featured in breeding displays. The male in breeding plumage has striking bright blue ear coverts and blue-purple crown and forehead, a black throat and nape, a blue-purple upper back, chestnut shoulders and a bluish-grey tail. The wings are drab brown and the belly white." (Wiki)