Flame Robin
Petroica phoenicea
The largest of the red robins, the flame robin is 12–14 cm (4.7–5.5 in) long. It has a more slender build than other members of the genus Petroica, with relatively long wings and neck and small head. The male is easily distinguished by the bright orange-red plumage of the throat, breast, and abdomen. The crown, nape, ear coverts, hindneck, and sides of neck are dark grey, and lores and chin are a grey-black. The grey feathers of the sides of the crown may be suffused with dull orange. The rest of the upperparts, comprising the wings, back and tail, are dark grey.
ID text from Wikipedia, CC BY-SA 4.0
Tomtit
Petroica macrocephala
The tomtit is a small (13 cm, 11 g) bird with a large head and a short bill. The male North Island subspecies has black head, back, wings (with a white wing-bar), and a white belly. The subspecies from South Island, the Chatham Islands, and Auckland Islands are similar, but have a yellow band across the breast between the black head and white belly. The females are brown instead of black. The Snares Island subspecies is entirely black, and is known as the black tit.
ID text from Wikipedia, CC BY-SA 4.0

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