Aberrant Bush Warbler
Horornis flavolivaceus
异色树莺
Introduction
A species in the bush warbler family Cettiidae, formerly classified within the 'Old World warbler' assemblage. Found in central and southern China, and the northern extremes of Myanmar and Vietnam. Its range extends through Bhutan, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Thailand, Timor-Leste, and Vietnam, with possible occurrence in northeastern and southeastern Bangladesh. Thirteen subspecies are currently recognized, with the last eight (H. f. sepiarius, H. f. flaviventris, H. f. vulcanius, H. f. kolichisi, H. f. everetti, H. f. banksi, H. f. oreophilus, and H. f. palawanus) sometimes considered a separate species, the Sunda bush warbler (Horornis vulcanius). Formally described in 1845 by English zoologist Edward Blyth based on a specimen collected in Nepal.
Distribution & Habitat
Range spans central and southern China through the Himalayan region to Southeast Asia and the Greater and Lesser Sunda Islands. Countries of occurrence include Bhutan, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Thailand, Timor-Leste, and Vietnam. May also occur in northeastern and southeastern Bangladesh.
Source: Wikipedia · CC BY-SA 3.0
Taxonomy
- Order
- Passeriformes
- Family
- Cettiidae
- Genus
- Horornis
- eBird Code
- abbwar1
Vocalizations
Subspecies (13)
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Horornis flavolivaceus banksi
mountains of northern Borneo (Sabah and Sarawak)
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Horornis flavolivaceus everetti
Timor (eastern Lesser Sundas)
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Horornis flavolivaceus flaviventris
mountains of central and southern Sumatra
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Horornis flavolivaceus flavolivaceus
Himalayas of Garhwal to Nepal, Arunachal Pradesh, and southeastern Tibet
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Horornis flavolivaceus intricatus
northern and eastern Myanmar and southwestern China (eastward to southern Shanxi)
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Horornis flavolivaceus kolichisi
Alor (Lesser Sundas)
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Horornis flavolivaceus oblitus
northern Laos and northern Vietnam
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Horornis flavolivaceus oreophilus
northern Borneo (Mount Kinabalu)
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Horornis flavolivaceus palawanus
mountains of Palawan (southwestern Philippines)
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Horornis flavolivaceus sepiarius
mountains of northern Sumatra
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Horornis flavolivaceus stresemanni
northeastern India (Garo and Khasi hills of Assam)
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Horornis flavolivaceus vulcanius
Java, Bali, Lombok, and Sumbawa
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Horornis flavolivaceus weberi
far northeastern India (Nagaland, Manipur, and eastern Mizoram) and adjacent western Myanmar southward to the Chin Hills
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.