Crested Goshawk at Century Park

​At Pudong’s Century Park on Sun. 26 Nov. 2017, I recorded Crested Goshawk Accipiter trivirgatus. It was my first record at Century of Crested Goshawk, a species whose presence in urban Shanghai is growing ever more noticeable.

Li Qiu (李秋), her husband Qiao Ying (乔颖), Paul Hyde, and I were standing in Woodcock Forest (31.213235, 121.551704), a heavily wooded part of Century Park. We were watching Great Spotted Woodpecker Dendrocopos major, itself rare in urban Shanghai.

We saw an Accipiter flying over the treetops. We ran out of the forest into a grassy area and saw the goshawk soaring 100 m above the park. Qiu got the photo above left.

The goshawk seemed not to be passing through Century but to be using the park; the combination of low flight over the treetops followed by soaring flight over the park gave me an impression of a raptor that knows the area.

Why is Sunday’s goshawk Crested Goshawk?

1. Wings short and broad and “pinched” at base–the narrow wing base is obvious in Qiu’s photo, as well as in my photo above right of a Crested Goshawk from Emeifeng, Fujian. Crested Goshawk is well-known for its narrow wing base and bulging secondaries. By contrast, regional sparrowhawks such as Besra Accipiter virgatus and Eurasian Sparrowhawk A. nisus have less-rounded wings.

Comparison of bulge of secondaries of regional Accipiter. Crested Goshawk A. trivirgatus shows a 'pinched' wing base and bulging secondaries. The wings of Chinese Sparrowhawk A. soloensis (top R) and Japanese Sparrowhawk A. gularis are much straighter, while the bulge in the wing of Eurasian Sparrowhawk A. nisus (bottom L) is less pronounced. (Craig Brelsford)
Comparison of bulge of secondaries of regional sparrowhawks. Crested Goshawk Accipiter trivirgatus (top L) shows a ‘pinched’ wing base and bulging secondaries. Much straighter are the wings of Chinese Sparrowhawk A. soloensis (top R) and Japanese Sparrowhawk A. gularis (bottom R). The secondaries of Eurasian Sparrowhawk A. nisus (bottom L) show more of a bulge than the previous two species but less than Crested Goshawk. (Craig Brelsford)

2. When I saw the raptor close, soaring over the treetops, the impression I got was not of a large, buzzard-sized Accipiter (as might have been the impression if the raptor had been Northern Goshawk A. gentilis). Instead, I got the impression of a smaller raptor. An impression of a large, Buteo-sized raptor would weigh against a diagnosis of Crested Goshawk, but an impression of a smaller raptor weighs in favor of an Accipiter the size of Crested Goshawk.

3. Besra is less likely to be seen soaring than is Crested Goshawk.

4. As I note in my recent post, “Crested Goshawk Invades Shanghai,” Crested Goshawk is known to occur in urban Shanghai, including Century Park. Knowledge that Crested Goshawk is in this city does not weigh against a diagnosis of the Accipiter Sunday as Crested Goshawk. Indeed, if my impression of a more or less resident Accipiter is correct, then it lends support to the idea.

P.S. In addition to the goshawk, our 38 species Sunday included a first-ever Century Park record of Eurasian Coot Fulica atra. View Sunday’s list here, and for a list of all 139 species recorded at the premier birding park in urban Shanghai, see our page Birds Recorded at Century Park.

Featured image: Crested Goshawk Accipiter trivirgatus. Left: Century Park, Shanghai, 26 Nov. 2017 (Li Qiu). Right: Emeifeng, Fujian, 30 April 2015 (Craig Brelsford).

Crested Goshawk Invades Shanghai

Crested Goshawk has sunk its talons into Shanghai. In the past year, records of the species have come from various locations throughout the city, in all four seasons. This past spring, a pair may have bred at Gongqing Forest Park.

It is remarkable that Crested Goshawk, a species of tropical and subtropical Asia, is even as far north as the Yangtze River. Most field guides show Accipiter trivirgatus indicus, the mainland form, occurring no farther north than Hangzhou. However, members of Shanghai Birding, the WeChat companion to this Web site, have reported Crested Goshawk in Nanjing and Nantong (Jiangsu). Other authorities record Crested Goshawk in Anhui, Henan, and even Beijing.

If the forest-loving goshawk has invaded the coastal, little-wooded, highly urbanized world of Shanghai, then it is not surprising that it would be using urban parks. Some of the parks of Shanghai, such as 102-year-old Zhongshan Park, where I found a pair of Crested Goshawk on 8 Sept., have massive trees and resemble old-growth forests.

Like the avifauna of islands, the birds of urban Shanghai’s green islands live in isolation. Except for stray cats and an occasional Siberian Weasel, urban residents Eurasian Tree Sparrow, Light-vented Bulbul, and Chinese Blackbird have few predators and are abundant.

With the imbalance comes an opportunity for raptors that can tolerate the noise and bustle of Earth’s Largest City. For Crested Goshawk, the pluses of urban living are apparently outweighing the minuses. It has come to feed on the rich store of passerines as well as mammals such as Pallas’s Squirrel.

On 16 May 2017 at Pudong’s Century Park, Shanghai Birding member Xueping Popp captured a Crested Goshawk exploiting the imbalance.

Crested Goshawk attacking Chinese Blackbird. Century Park, Shanghai, 17 May 2017. © 2017 by Stephan Popp & Xueping Popp
Crested Goshawk devouring Chinese Blackbird, Century Park, 17 May 2017. About this incident, photographer Xueping Popp wrote: ‘I went to Century Park early in the morning to look for Black Bittern. Nothing happened, so I decided to walk a little in the park. Suddenly I heard the cries of Chinese Blackbird. I looked up and saw a Crested Goshawk standing in the nest and eating a chick piece by piece. The scene was brutal, but Crested Goshawk was doing what raptors are supposed to do. I observed the whole process silently until the goshawk finished its meal.’ © 2017 by Stephan Popp & Xueping Popp.

Shanghai Birding member Wāng Jìn Róng (汪进荣) was one of the first birders to record Crested Goshawk in Shanghai. Jìn Róng has seen the species at Zhongshan Park and Gongqing Forest Park as well as on the grounds of the Shanghai Zoo. Jìn Róng took the photo at the top of this post as well as the photos immediately below. All were taken at Zhongshan Park–the photo above this past May, the photos below last December.

In December 2016 this Crested Goshawk made a very rare appearance in Zhongshan Park, Shanghai. Photo by Wāng Jìn Róng (汪进荣).
Crested Goshawk, Zhongshan Park, 18 Dec. 2016. Note the dark mesial stripe on white throat, heavy brownish to rufous streaking on the breast, and heavy rufous barring on the belly. The small nuchal crest is not seen here, being most obvious when the goshawk is in profile. (Wāng Jìn Róng).

The Crested Goshawk below, photographed by Shanghai Birding member Kai Pflug at Cape Nanhui, may have been in transit. Cape Nanhui has little tree cover beyond its famous microforests (where Kai got this photo), and Crested Goshawk is rarely recorded there.

Crested Goshawk, Cape Nanhui, April 2017. (Kai Pflug)
Crested Goshawk, Cape Nanhui, April 2017. Note large size but slim build and wings whose tips barely exceed the base of the tail. The short, rounded wings and long tail are adaptions to maneuvering through thick forest. (Kai Pflug)

Have you seen Crested Goshawk or other raptors in your city? Tell us your story in the comments below.

RESOURCES ON CRESTED GOSHAWK

Most field guides to Shanghai birds show outdated range maps for Accipiter trivirgatus indicus. Among them are Birds of East Asia (Brazil), A Field Guide to the Birds of China (MacKinnon & Phillipps), Handbook of the Birds of the World Vol. 2, and Raptors of the World (Ferguson-Lees & Christie).

The media below offer a clearer picture of the current status in China of Crested Goshawk.

Join Shanghai Birding for the very latest bird sightings in Shanghai.
Join Shanghai Birding for the very latest bird sightings in Shanghai.

Brelsford, Craig, moderator. Shanghai Birding, a WeChat group. The subject of Crested Goshawk generated discussions with various birders, among them Jiangsu birders Scoter and maidong, who had information about Crested Goshawk in Nanjing and Nantong. Hangzhou birder Cheng Qian reported on the distribution of Crested Goshawk in Zhejiang. Beijing-based member Paul Holt alerted us to scholarship on the changing distribution of Crested Goshawk and shared records of the species from Anhui and Beijing. Guangdong-based member Jonathan Martinez wrote about breeding Crested Goshawk in Hunan.

There are two ways to join Shanghai Birding. First, you need WeChat, the platform on which Shanghai Birding runs. Once you have installed WeChat, (1) fill out the form on our Sightings page or (2) friend Craig Brelsford on WeChat (ID: craigbrelsford). State that you wish to join the group.

eBird. 2017. eBird Range Map–Crested Goshawk. eBird: An online database of bird distribution and abundance [Web application]. eBird, Ithaca, New York. (Accessed: Sept. 14, 2017).

The eBird Range Map shows points on the Earth where checklists with Crested Goshawk have been submitted. The map shows Crested Goshawk in Zhejiang, Jiangsu, Anhui, and Henan as well as Shanghai.

Fei, Y.-L., Lei, M., Zhang, Y. and Lu, C.-H. Geographic Distribution Change of Crested Goshawk (Accipiter trivirgatus). Chinese Journal of Zoology 45 (2010): 174–175. Available here. (Accessed: Sept. 14, 2017).