Does Green-backed FlycatcherFicedula elisae migrate through Shanghai? Records exist of the species, but in my opinion they are mainly misidentifications of female Narcissus FlycatcherF. narcissina narcissina (above). In this post, I am going to unearth the roots of my skepticism about F. elisae in Shanghai and describe the differences between female F. elisae and female F. n. narcissina.
Each spring and autumn, birders in Earth’s Greatest City claim records of elisae. Invariably, the bird in question is a female, not the very distinctive adult male. Here our first red flag pops up: How likely is it that elisae is the one species of passerine whose records in Shanghai never involve adult males?
For the sake of argument, let us admit the possibility of an all-female migration of elisae through Shanghai. Fine, I retort; then show me photos of these purported elisae. The photos are duly supplied, and again and again, as has been the case throughout my more than 10 years in Shanghai, the supposed F. elisae is revealed on closer scrutiny to be female F. n. narcissina.
Indeed, I have seen better documentation in Shanghai of Ryukyu FlycatcherF. (narcissina) owstoni than of F. elisae; on 17 April 2016 at Pudong’s Binjiang Forest Park, Shanghai birder Zhang Xiaolei got a very interesting picture of a possible adult-male owstoni.
Mistakes of the sort many Shanghai birders are making contribute to a distorted picture of the presence on the central Chinese coast of a little-known species. What’s more, the mistakes are avoidable. Separation of female F. elisae and F. n. narcissina is usually straightforward.
Female F. elisae has greenish upperparts with a yellowish or olive tint. Female F. n. narcissina is greenish with a brownish tint, like female Blue-and-white FlycatcherCyanoptila cyanomelana (above). On their underparts, female F. elisae is “dull yellow or yellowish-buff,” while F. n. narcissina is mainly off-white, with brownish-white flanks and a hint of yellow on the throat and belly (Brazil 2009, 436).
Accurate records in Shanghai, one of the most thoroughly birded areas on the Chinese coast, will lead to better understandings of both F. elisae and F. n. narcissina. Already, the growing body of knowledge about these East Asian breeding endemics has led to the separation of F. elisae and F. n. narcissina into separate species. Previously, elisae had been treated as a subspecies of Narcissus Flycatcher.
We know as well that the summer and winter ranges of the sister species are disjunct, with F. elisae breeding in a very compact range in Hebei (Wulingshan), Beijing, and Shanxi and wintering in southern Thailand and Peninsular Malaysia. The breeding range of F. n. narcissina includes the main islands of Japan as well as the Kuril Islands, Sakhalin, and the coastal Russian Far East. The species winters in Hainan, the Philippines, and Borneo and passes through Shanghai each spring from about 15 April to 15 May.
Unlike other passage-migrant flycatchers in Shanghai, F. n. narcissina is much less common in autumn than in spring. That is a mystery, one of many surrounding the migration of the Narcissus Flycatcher group.
In light of the information deficit, it behooves us Shanghai birders to strive for accurate records (or non-records) of elisae in our region. Let us practice self-discipline, hone our skills, and give outside observers the clearest possible picture of bird migration in Shanghai.
Brazil, Mark. 2009. Birds of East Asia. Princeton, New Jersey: Princeton University Press. Entries for Narcissus Flycatcher and Chinese Flycatcher (Ficedula elisae), p. 436.
Our featured image above shows the bluetails of the world: Himalayan (left panels), Red-flanked (right panels), and in the middle the inscrutable “Gansu” Bluetail. In this post, I report a new eastern record of “Gansu” and discuss the current taxonomic limbo of the form. — Craig Brelsford
Found at Wulingshan, Hebei, on 11 June: “Gansu” BluetailTarsiger (cyanurus? rufilatus?) “albocoeruleus.” Our record is the first for the mountain northeast of Beijing, the first for Chengde Prefecture in Hebei, and the easternmost in history for the form. Until recently, “Gansu” Bluetail was thought to breed only in Qinghai and Gansu, 1200 km (745 miles) to the southwest.
In Beijing, Hebei, and Shanxi, “albocoeruleus” has now been found on at least six mountains. Before our discovery, the easternmost of those mountains was Haituoshan, 140 air-km (87 air-miles) west of Wulingshan. Our record pushes the eastern edge of the range of “albocoeruleus” from the western side of Beijing to the mountains northeast of the metropolis.
The taxonomy of “Gansu” Bluetail is uncertain. It is currently recognized neither as a species in its own right nor as a subspecies of Red-flanked Bluetail Tarsiger cyanurus or Himalayan Bluetail T. rufilatus. Adult-male “albocoeruleus” have a white supercilium as in cyanurus, and “albocoeruleus” are said to be closer genetically to cyanurus, but the legs of “albocoeruleus” are long, as in rufilatus.
The song of “Gansu” Bluetail is distinct from the songs of Red-flanked and Himalayan. Listen to “Gansu”:
Now compare the song of Himalayan Bluetail, by Mike Nelson via xeno-canto.org:
Listen to this other recording by Mike Nelson, also labeled “Himalayan Bluetail”:
The second recording by Nelson is of “albocoeruleus.” It was made in Haidong Prefecture in eastern Qinghai, a place known as a breeding site for “albocoeruleus.” Note the similarity between Nelson’s recording from Haidong and mine from Wulingshan.
Usually, a bird with a song as distinctive as that of “albocoeruleus” would rise to at least the subspecies level. Why, then, is “albocoeruleus” languishing in taxonomic limbo?
The reason may be a simple lack of research. Many species endemic or nearly endemic to China have only recently begun to be fine-tuned taxonomically. Green-backed FlycatcherFicedula elisae, another bird we noted at Wulingshan, was long considered conspecific with Narcissus Flycatcher F. narcissina, despite the two species having widely separated breeding areas, highly distinctive plumage (especially males), and songs so different that playback of one species elicits no interest from individuals of the other (Clement 2006).
Zappey’s FlycatcherCyanoptila cumatilis is another species that was long overlooked. It differs subtly but consistently from Blue-and-white Flycatcher C. cyanomelana but was not recognized as a new species until 2012 (Leader & Carey 2012). Zappey’s also breeds on Wulingshan.
Will “Gansu” Bluetail get the same love and attention as Green-backed and Zappey’s Flycatcher? Researchers surely must be aware of the taxonomic uncertainty surrounding “Gansu.” Its distinctive song is a cry in the wilderness, a plea for a more accurate assessment of its place in the animal kingdom.
BIRDING REPORT: WULINGSHAN
Who: Shanghai birders Michael Grunwell and Craig Brelsford guided by Beijing-based ace birder Jan-Erik Nilsén. Our driver was Mr. Wang (+86 189-1129-3689).
Where: Wulingshan (雾灵山, 40.598801, 117.476280), Hebei, near Beijing-Hebei border northeast of Beijing. Highest elevation: 2118 m (6,949 ft.). Birding from elev. 950 m (3,120 ft.) to summit.
When: Sat.-Sun. 10-11 June
How: Eschewing undependable air travel, Michael and I took the bullet train from Shanghai. What a ride! 305 kph (190 mph) and arrival in Beijing within a minute of the time scheduled. Then a driver hired by Jan-Erik picked us up for the three-hour drive to Wulingshan. The driver accompanied us there and drove us back to Beijing.
“Gansu” Bluetail 1 2cy male singing
UPDATE, 24 JUNE: James Eaton from Birdtour Asia very kindly shared with me a photo of an adult-male “Gansu” Bluetail taken June 2011 at Huzhu Beishan, Haidong Prefecture, Qinghai.
Zappey’s Flycatcher 1 singing
UPDATE, 24 JUNE: After an e-mail exchange with Paul Leader and Geoff Carey, I have changed my record of Zappey’s Flycatcher to Blue-and-white FlycatcherCyanoptila cyanomelana intermedia. The bird we found at Wulingshan is a male in its second calendar year that has not attained full adult plumage.
Of this flycatcher, photos and sound-recordings of which Leader examined, Leader writes, “[T]he darkness of the throat on your bird is not correct for first-year Zappey’s. … Morphology fits intermedia. It certainly doesn’t fit cumatilis, and I don’t see any plumage features that indicate it’s a hybrid. I think it’s just a first-year intermedia, which accounts for plumage and perhaps the variation in song” (Leader et al., in litt., 2017).
Koklass Pheasant 2 Himalayan Cuckoo 3 Large Hawk-Cuckoo 1 Japanese Pygmy Woodpecker 1 White-backed Woodpecker 3 White-throated Rock Thrush 1 Asian Stubtail 1 Thick-billed Warbler 1
Grey Nightjar, White-bellied Redstart, Chinese Thrush, Yellow-rumped Flycatcher, and Claudia’s Leaf Warbler, Hume’s Leaf Warbler, Chinese Leaf Warbler, and Yellow-streaked Warbler.
— We got impressive results in only a day and a half birding—albeit with perfect weather. Wulingshan can be done from Shanghai in a weekend!
— Special thanks to my partner Jan-Erik Nilsén. Jan-Erik heard the song of the bluetail, recognized it, and called me over. Jan-Erik is highly experienced with “Gansu” Bluetail, having seen and sound-recorded the form on Haituoshan as well as at Lingshan and Baicaopan (Beijing-Hebei), Xiaowutaishan (Hebei), and Wutaishan (Shanxi).
— Thanks also to Paul Holt for informing me about records of “Gansu” Bluetail in the Beijing area.
Brelsford, C. 2017. eBird Checklist: https://ebird.org/ebird/view/checklist/S37503446. eBird: An online database of bird distribution and abundance [web application]. eBird, Ithaca, New York, USA. Available: https://www.ebird.org. (Accessed: 25 Sep 2020). Note: This is the Wulingshan list for 10 June 2017.
———. 2017. eBird Checklist: https://ebird.org/ebird/view/checklist/S37519385. eBird: An online database of bird distribution and abundance [web application]. eBird, Ithaca, New York, USA. Available: https://www.ebird.org. (Accessed: 25 Sep 2020). Note: Wulingshan list for 11 June 2017.
Clement, P. (2006). Family Muscicapidae (Old World Flycatchers). Pp. 131-2 (Narcissus Flycatcher) in del Hoyo, J., Elliott, A. & Christie, D.A. eds. (2006). Handbook of the Birds of the World. Vol. 11. Old World Flycatchers to Old World Warblers. Lynx Edicions, Barcelona, Spain.
Leader, Paul J. & Carey, Geoff J. Zappey’s Flycatcher Cyanoptila cumatilis, a forgotten Chinese breeding endemic. Forktail 28 (2012): 121-128.
Leader, Paul J., Carey, Geoff J., Brelsford, Craig, Grunwell, Michael, and Nilsén, Jan-Erik. Series of e-mail messages, 18-20 June 2017.