Fiji Parrotfinch

This species has a courtship flight conducted above the trees. The pair fly on a strongly oscillating path with one bird ascending while the other is descending, both calling constantly. After display, the birds land on a branch for a mating ritual which starts with locking bills, followed by the female hanging upside-down for a variable period of time, and then copulation while the male holds the female's neck. The flight and mating rituals have been recorded for three-coloured and red-throated parrotfinches, and may be typical for the genus. The nest is built with fresh grass blades, and is domed with a side entrance. It is always hidden in thick foliage, but can be at any height from the ground. The normal clutch is four spherical whitish eggs. Chicks are naked and have pinkish skin; the distinctive gape has blue nodular spots technically termed as papillae or tubercles at the upper and lower corners, and the yellow palate has a ring of five black spots. Most young estrildid finches beg for food with their wings held against the side, but juvenile parrotfinches lift the wing on the side away from the feeding parent. This behaviour may restrict competition for food from other nestlings. When not breeding, the Fiji parrotfinch is gregarious, and is usually found in small flocks of up to six birds. It feeds on seeds, usually at the "milk" (watery ripe) stage. A favourite is the Guinea grass, Megathyrsus maximus. The finch will also take seed from rice ears, and its spread into gardens has been aided by another preferred food plant, carpet grass, Axonopus compressus, which is a common lawn grass in Fiji. This finch readily takes insects, often extracted from under loose bark or tree crevices. It also feeds on nectar and small berries. In some areas, this finch's diet may bring it into conflict with rice growers, but there is no evidence that this protected species is seen as a serious agricultural threat either in Fiji, or in Australia, where it is kept in captivity in small numbers.

The Fiji parrotfinch is endemic to Fiji, where it is found on the four largest islands (Viti Levu, Vanua Levu, Taveuni and Kadavu) and also in the smaller western islands of the Mamanuca and the Yasawa groups. It is uncommon but widespread, found in both forested and open habitats, from sea level to at least 1,200 m (3,900 ft) on Viti Levu. It appears to be less common on Taveuni than the larger islands. It has adapted well to man-made habitats, and is seen in grasslands, pasture, rice paddies, parks and gardens. Many parrotfinch species are mainly forest birds, but American ornithologist Jared Diamond has suggested that in the central Pacific, where there are no seed-eating munias occupying the open habitats, species such as Vanuatu's blue-faced parrotfinch and its Fijian relative have expanded into grassy areas of their islands to exploit the supply of seeds.

The Fijian parrotfinch is endemic to a single country; although its population is unknown, it is described as uncommon or locally common. In the absence of evidence for any decline in numbers, its population is believed to be stable, and it is therefore classed as Least Concern on the IUCN Red List. It is protected under Schedule 2 of Fiji's Endangered and Protected Species Act 2002, which regulates the import and trade of species that are not thought to be at a high risk of extinction, but may be threatened if trade in those species is not regulated. In the early 20th century, Europeans in Fiji kept these finches as cagebirds, calling them croton finches because of their liking for the croton bush, but the pet trade appears not to be a significant factor at present. Fiji's native birdlife has been badly affected by agriculture, deforestation and introduced pests like rats and mongooses. Although Important Bird Areas have been established on Taveuni and the forest east of Vanua Levu, conservation problems persist. The Fiji parrotfinch has adapted well to man-made landscapes; it is neither a ground nor hole nester, so it avoids predation from the mongoose and competition for nest sites with introduced common and jungle mynas. Introduced rodents are able to access the nests and may affect breeding productivity. The potential introduction of other species, such as snakes, or diseases like avian malaria could lead to major losses among bird species.