Daily Archives: 11/12/2025

Maekdo & Samnak Eco-parks, Busan: pre-restoration research, December 9th

Birds Koreans already likely know that we are working on an SER-Microsoft supported collaborative restoration project, which is being developed through our MOU with the Busan Nakdong River Project Management Office.

Among the many component parts of this project is the need to improve understanding of the Eastern Taiga Bean Geese which winter here – and along the lower Nakdong River.

On December 9th, I therefore spent from just before sunrise to mid-afternoon in Maekdo (now largely closed to the public in order to reduce the risk of spread of Highly pathogenic Avian Influenza) and across the river in Samnak Eco-park – more than half of which has been changed to heavily managed parkland, with a dog park, and several crowded Park Golf-courses.

During the day, Ramsar-defined internationally important counts were made of both Eastern Taiga Bean Goose (>350, >4% of the Korean Non-Br Population) and Whooper Swan (1,131 or about 2% of the East Asia Pop) at Maekdo; and of Eastern Taiga Bean (1,300, or 16% of the Korean Non-br population) in the wetlands at the southern end of Samnak Eco-park.

Other observations of note in Maekdo included several nationally common but globally threatened Korean Water Deer; 1-2 White-tailed Eagle; a single globally Vulnerable Greater Spotted Eagle; a single globally Near Threatened Ferruginous Duck and two hybrids – one thought to be from a Ferruginous x Baer’s pairing and the other from a pairing of Ferruginous x Common Pochard; two Dusky Warbler (rare in the southeast at any time of the year, and very uncommon in winter in the ROK); and of greatest surprise, 4-5 Barn Swallow together with a single Sand Martin – my first mid-winter observation of this species in the ROK.

The southern end of Samnak also held a single Ferruginous Duck, and even less expected a single Chinese Pond Heron – again a rare species in the southeast at any time of the year.

Eastern Taiga Bean Goose Anser (fabalis) middendorffii 큰부리큰기러기, Maekdo. In addition to their different vocalisations, identification from the rather smaller Tundra Bean Goose 큰기러기 (which is very scarce in Busan) is based on their very long neck and long slope from forehead along bill; long wedge-shaped bill, with minimal “grin”; pale breast and foreneck, meaning that the rear flank stripes stand out prominently; and the head pattern, with some contrast developing through the winter between their darker crowns and hindnecks and their paler ear-coverts – more obvious in this image in the rear bird.
Very small part of a large herd of Whooper Swan Cygnus cygnus 큰고니.

Greater Spotted Eagle Clanga clanga 항라머리검독수리…what a stunning species!
Presumed hybrid Ferruginous Aythya nyroca 적갈색흰죽지 x Baer’s Pochard Aythya baeri 붉은가슴흰죽지 based on the large bill and the stripey look to the brownish flanks (both features of Baer’s) with the vivid orangey head suggesting Ferruginous.
Sand Martin Riparia riparia 갈색제비 on left and Barn Swallow Hirundo rustica 제비 on right.
Chinese Pond Heron Ardeola bacchus 흰날개해오라기 to the rear of the two Eastern Taiga Bean Geese, Samnak Eco-park
Globally Vulnerable, Nationally Least Concern Korean Water Deer Hydropotes inermis argyropus 고라니.

Two checklists on eBird here and here.