Blue-and-white Flycatcher
Cyanoptila cyanomelana
白腹蓝鹟
Introduction
The Blue-and-white Flycatcher (Cyanoptila cyanus) is a migratory species breeding in Japan, Korea, northeastern China, and the Russian Far East. It winters in Southeast Asia, including Vietnam, Cambodia, Thailand, Sumatra, and Borneo. Its preferred habitat consists of forested areas, where it frequents the upper canopy levels. The species is most active during morning hours. It has occurred as a vagrant in Sri Lanka, with one record from Sinharaja Rainforest in 2014.
Description
This is a relatively large flycatcher, measuring 16-17 centimeters in length and averaging 25 grams in weight. The adult male displays an unmistakable deep cobalt blue plumage across the upperparts, with black coloration extending from the face down to the upper breast and flanks. The remaining underparts are pure white, and white is also visible at the base of the outer tail feathers. Females are slightly smaller on average and present a more subdued appearance, with grey-brown coloring on the head, face, and most of the upperparts, contrasted by pale beige-white coloration on the lower middle of the throat. Immature males resemble females but already display the adult's distinctive blue wings while otherwise being brown.
Identification
Adult males are unmistakable with their combination of deep cobalt blue upperparts and black-and-white underparts. The smaller-headed profile of females helps distinguish them from other brown flycatchers within their range. Immature males can be identified by their brown overall plumage combined with distinctly blue wings, a feature that sets them apart from females and juveniles of similar species. The species' relatively large size compared to other flycatchers is also a useful identification clue in the field.
Distribution & Habitat
This species breeds across Japan, the Korean Peninsula, northeastern China, and the Russian Far East. It migrates southward to spend the non-breeding season in Southeast Asia, including Vietnam, Cambodia, Thailand, Sumatra, and Borneo, with occasional vagrant records as far west as Sri Lanka. During breeding season, it inhabits primary and secondary lowland and submontane forests up to 1,200 meters elevation, including taiga, wooded slopes, gullies, riverine thickets, and plantations. In wintering areas such as Borneo, it occurs up to 1,850 meters elevation in forested hills, lower montane forest, and logged or plantation areas.
Behavior & Ecology
The breeding season spans from late May to early August. Nests constructed primarily of moss are placed in various sheltered locations including cliff crevices, among tree roots, under overhanging stream banks, in shallow tree hollows, and occasionally in abandoned buildings. The female incubates a clutch of four to six eggs alone for 14-15 days and invests more time and energy in parental care than the male. The species primarily feeds on insects and larvae but also consumes berries including pokeweed. Vocalizations consist of a short, melancholic series of whistles. These flycatchers are most active during morning hours.
Conservation
The species is currently classified as Least Concern on the IUCN Red List due to its wide distribution and presumably large population size. However, the overall population is experiencing a decreasing trend, which warrants continued monitoring. Primary threats likely include habitat loss and degradation throughout both breeding and wintering ranges. Nest parasitism by northern hawk-cuckoo, common cuckoo, and lesser cuckoo also impacts reproductive success in some areas.
Culture
Known also as the Japanese flycatcher, this species holds particular cultural significance in Japan where it is considered a symbol of the country's rich avifauna. Its striking blue and white plumage has made it a subject of interest among bird enthusiasts and nature photographers throughout East Asia. The species' presence in traditional habitats and its annual migration cycle connect it to broader cultural narratives about seasonal change and natural rhythms in the regions where it occurs.
Source: Wikipedia · CC BY-SA 3.0
Taxonomy
- Order
- Passeriformes
- Family
- Muscicapidae
- Genus
- Cyanoptila
- eBird Code
- bawfly2
Vocalizations
Subspecies (2)
-
Cyanoptila cyanomelana cyanomelana
breeds southern Kuril Islands and Japan; winter range of subspecies poorly known, but species winters southward to Myanmar, Thailand, and the Greater Sundas
-
Cyanoptila cyanomelana intermedia
breeds in northeastern China (Heilongjiang southward to eastern Hebei), southeastern Russia (Amurskaya Oblast and Primorskiy Kray), and the Korean peninsula; winter range of subspecies poorly known, but species winters southward to Myanmar, Thailand, and the Greater Sundas
Data Sources
Species description from Wikipedia, licensed under CC BY-SA 3.0.
Bird images and sounds sourced from GBIF, contributed by citizen scientists worldwide under Creative Commons licenses.
Taxonomy data from AviList 2025.