Walking or driving at Cape Nanhui these days, you may hear an interesting sound coming from the reeds. HBW describes it as “a low-pitched, repeated djuk-djuk-djuk,” but I do not think that description does the sound justice. To me, the sound is reminiscent of some of the more obscure Cure songs, in particular, “Like Cockatoos”—the same swirling sound. This is the sound of Marsh Grassbird.
It is much more difficult to see than hear Marsh Grassbird. It took me a few days before I was successful (with the help of 吴世嘉 and David—thanks!). The bird usually hides deep in the reeds. Occasionally, and in particular this time of year, it flies up a few meters while singing before dropping quickly back into the reeds.
What does Helopsaltes pryeri look like? Just look at the photos below, and consider the Chinese name, Banbei Daweiying (斑背大尾莺, “striped-back long-tailed warbler”). The mainland Asian breeder, sinensis, is 14 cm long and weighs 10 g. It feeds mainly on insects and breeds in wet, reedy swamps.
Its most remarkable feature is its song display. The grassbird begins singing on a reed, flies, still singing, in a high arc, then drops back quickly into the reeds (usually too quick to get a decent photo, at least for me).
The species is still a mystery to ornithologists, with uncertainties regarding its migration patterns, for example. Living a life hidden in the reeds does not facilitate ornithological studies.
The conservation status of Marsh Grassbird is Near Threatened. It is suffering from habitat loss as the reed beds it needs for breeding are being destroyed. At Cape Nanhui alone, my guess is that in the past year around a third of the habitat suitable for the species has been destroyed. With an estimated (declining) global population of 10,000 to 15,000 individuals, the last thing the species needs is further destruction of the reeds at Nanhui.
Is Marsh Grassbird a spectacular-looking bird? Perhaps not, but human standards of beauty are not a criterion for conservation. If however you need a reason to protect this bird, then just listen to its song:
Marsh Grassbird, 10 April 2016, large reed bed at 30.870711, 121.942976, Cape Nanhui, Shanghai (00:07; 1 MB; Craig Brelsford)
Here are some of my recent photos of the threatened bird, all taken at Cape Nanhui:
Featured photo: Marsh Grassbird, Cape Nanhui, April. (Kai Pflug)
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: 8 Aug 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: 8 Aug 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.
On 18 Dec., a quartet of teenage birders found an acrocephalid in the Magic Parking Lot at Cape Nanhui, the nubby promontory in Pudong and Shanghai’s best birding hotspot. The consensus is that the bird is either Paddyfield WarblerAcrocephalus agricola or Manchurian Reed WarblerA. tangorum.
In the images below, note the supercilium, which extends behind the eye; dark eye-line; bright white chin and throat; peach breast band and flanks; bill with black upper mandible and pink lower mandible; and peaked head. Those criteria most closely indicate Manchurian Reed Warbler and Paddyfield Warbler.
Paddyfield Warbler winters mainly in India and would be extralimital here; Manchurian Reed Warbler breeds in northeastern China, is listed as Vulnerable and is therefore scarce, and probably passes through Shanghai.