Black-throated Loon and Red-throated Loon have been found at a little-birded recreational area in Pudong, and Slaty-backed Gull has appeared on the Huangpu River across from the Bund. All three species are rare in Earth’s Greatest City, with Black-throated Loon the scarcest. All three were brought to light by Shanghai birders using social media.
The loons had been sighted numerous times before my partner Michael Grunwell and I arrived on Sat. 18 March at Sanjiagang Seaside Park (31.217928, 121.768172). The dilapidated recreation area is on the coast of the East China Sea, near the mouth of the Yangtze River, 9 km north of Pudong Airport. Chinese birders discovered the loons, and birder Larry Chen, his partners Komatsu Yasuhiko and Archie Jiang, and bird photographer Kai Pflug followed up, reporting back to our chat group, Shanghai Birding.
On Sun. 19 March, the Red-throated Loon was discovered dead at the park by local birder Suōyǔ Hè (蓑羽鹤). It is not clear what killed the bird, but it may have slowly poisoned itself by ingesting oil that had collected on its feathers. Larry said that during his encounters with the individual “The loon was constantly attempting to preen itself” and that he clearly saw oil on one of its flanks. Can you detect anything amiss in the video below?
Red-throated Loon breeds at latitudes above 50 degrees in Eurasia and North America. Wintering Gavia stellata is more common in Shanghai than Black-throated Loon, being recorded annually here. Michael, my wife Elaine Du, and I found Red-throated Loon at Cape Nanhui in January 2016.
Black-throated Loon is also known as Black-throated Diver and Arctic Loon. Gavia arctica breeds across northern Eurasia and into Alaska. It is an uncommon winter visitor all along the coast of China and is very rarely noted in Shanghai, with the last previous record in 2012. Before the encounter Saturday, I had seen Black-throated Loon only once, in September at Laotieshan in the northeastern province of Liaoning.
Here is video of Black-throated Loon at Sanjiagang Seaside Park.
GULLING WITH BIRDERS IN MY POCKET
On Sat. 18 March at Binjiang Park (31.2356935, 121.4973863), with the Pudong skyline looming behind, Michael Grunwell and I scanned the gulls on the Huangpu River.
“I think we’ve found Slaty-backed!” Michael cried.
With my iPhone I took photos of the gull through my scope and uploaded the photos to Shanghai Birding, the chat group I manage on the instant-messaging application WeChat. Within minutes the experts in my pocket started weighing in. Shenzhen birder Jonathan Martinez and Larry Chen, both strong gullers, confirmed Michael’s ID. Michael and I had a life bird!
Slaty-backed Gull Larus schistisagus breeds on islands and cliffs on the coast of the Russian Far East (particularly the Kamchatka Peninsula) as well as Hokkaido. Wintering Slaty-backed are common in Japan, less common in northern coastal China, and rare in Shanghai.
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On 23-24 Jan. Elaine and I noted 68 species on one of the coldest weekends in Shanghai in recent memory. We birded Chongming, the great alluvial island at the mouth of the Yangtze River, and Nanhui. With strong northwesterly winds making temperatures feel as cold as -16°C, many birds lay low, but the strange weather probably played a role in two extraordinary records: 2 Cinereous Vulture (Chongming) and 3 Red-throated Loon (Nanhui). Other notable records were 2 Horned Grebe at Dishui Lake and a winter record of Wood Sandpiper at Nanhui as well as Eastern Yellow Wagtail (taivana) and Red-throated Thrush on Chongming. On Chongming and at Nanhui, we had Red-throated Pipit and Water Pipit mixed in with Buff-bellied Pipit.
Listed as near threatened by IUCN, Cinereous Vulture breeds across Eurasia, from Spain to China. In China, Aegypius monachus breeds mainly in the west as well as in Hulunbeier in northeastern Inner Mongolia. It is a “sporadic” (MacKinnon) or “rare” (Brazil) winter visitor to the southeast China coast. The largest Old World vulture, it has a wing span of about 260 cm (8.5 ft).
From a distance, the huge vultures looked like dogs as they rested on the ground. The pair was approachable. They usually stayed close together. Their plumage was shiny, and they appeared healthy. I doubt, however, that the eastern end of Chongming Island is a place that can support a pair of these huge birds for long. A Chinese photographer we met said the Chongming pair was probably the same pair that had been reported recently in Nantong. As of Saturday, the vultures had been on Chongming for a week to 10 days.
Red-throated Loon is also known as Red-throated Diver. Gavia stellata breeds in tundra bogs and taiga pools above 50° N latitude in Eurasia and North America. It winters along the coasts of Europe, Asia, and North America. Though the species faces no global threat, it is rare in China, with IUCN estimating that less than 50 spend the winter on the Chinese coast. Two of our three birds were feeding in one of the few unfrozen fish ponds inside the sea wall. A third was not feeding, and our partner Michael Grunwell feared it had been contaminated by oil.
Elaine and I birded Chongming alone. On Sunday at Nanhui, Michael joined us. We car-birded both days, driving a Skoda Scout rented from Avis.
Cinereous Vulture and Red-throated Loon became the 265th and 266th species of bird that Elaine and I have noted in the Shanghai region since 11 Sept. 2015.
Featured image: Cinereous VultureAegypius monachus, Chongming Island, Shanghai, 23 Jan. Photographed using Nikon D3S and Nikkor VR 600mm F/4G lens mounted atop Manfrotto 055 carbon-fiber tripod and MVH502AH video head. F/9, 1/1250, ISO 2000. (Craig Brelsford)