The Rusty-breasted Whistler (Pachycephala fulvotincta), also known as the Fulvous-tinted Whistler, is a species of bird

Bird

Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...

 in the Pachycephalidae

Pachycephalidae

The family Pachycephalidae, collectively the whistlers, includes the whistlers, shrike-thrushes, shrike-tits, pitohuis and Crested Bellbird, and is part of the ancient Australo-Papuan radiation of songbirds. Its members range from small to medium in size, and occupy most of Australasia...

 family. It is endemic to Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

, where it ranges from Java

Java

Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...

 east to Alor and north to the Selayar Islands. It is variably considered a subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

 of a widespread Golden Whistler

Golden Whistler

The Australian Golden Whistler is a species of bird found in forest, woodland, mallee, mangrove and scrub in Australia and in mountain forest in the Snow Mountains in the Papua Province of Indonesia. Most populations are resident, but some in south-eastern Australia migrate north during the winter...

 or treated as a separate species, but strong published evidence in favour of either treatment is limited, and further study is warranted to resolve the complex taxonomic situation.

It is the westernmost member of the Golden Whistler group, being bordered to the east by the Black-chinned

Black-chinned Whistler

The Black-chinned Whistler is a species of bird in the Pachycephalidae family, which is endemic to Halmahera and adjacent smaller islands in North Maluku in Indonesia. It is variably considered a subspecies of a widespread Golden Whistler The Black-chinned Whistler (Pachycephala mentalis) is a...

 and Banda Sea Whistler

Banda Sea Whistler

The Banda Sea Whistler , also known as the Yellow-throated Whistler , is a species of bird in the Pachycephalidae family...

s, and to the south by the Australian Golden Whistler. Compared to other members of the Golden Whistler group, the Rusty-breasted Whistler is relatively small, and males have a white throat and a rust

Rust (color)

Rust is a red-brown-orange color resembling iron oxide. It is a commonly used color in stage lighting, and appears roughly the same color as photographic safelights when used over a standard tungsten light source. The color is number 777 in the swatch book....

-tinged chest, except in the subspecies teysmanni from Selayar Islands where the plumage

Plumage

Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...

of the male is female-like.