Satellite Tracking of Migrating Whooper Swans<i>Cygnus</i><i>cygnus</i>Wintering in Japan.

Shimada, Takehiko; Yamaguchi, Nori; Hijikata, Naoya; Hiraoka, Emiko; Hupp, Jerry W.; Flint, Paul L.; Tokita, Ken-ichi; Fujita, Go; Uchida, Kiyoshi; Sato, Fumio; Kurechi, Masayuki; Pearce, John M.; Ramey, Andrew M.; Higuchi, Hiroyoshi

doi:10.2326/osj.13.67

Cited by 25 publications

(25 citation statements)

References 15 publications

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“…The number of stopover sites for Whooper Swans captured at Lake Kussharo in Hokkaido was 1.9 ± 0.8 and 1.5 ± 0.5 for the spring and autumn migrations, respectively (Shimada et al, 2014). The definition of the start and arrival at a site differs between Shimada et al (2014) and the current study; however, our data suggest that the stopover duration is shorter and that the number of stopover sites is a little greater for Tundra Swans.…”

Section: Migration and Ep Flyway Of Tundra Swanscontrasting

confidence: 60%

“…Although all stopover sites are important, it may be most critical to conserve the following stopover sites: 1) Kutcharo Lake, the Amur Liman Ocean, zal Piltun Lake, the Kolyma River and Senkyuyel' Lake (representing frequently used stopover sites for both spring and autumn migrations), as well as 2) zaliv Chayvo Lake, Shchastya Bay, and the Kava River stopover sites (used during only autumn migration). Shimada et al (2014) reported on the duration at stopover sites and the number of stopover sites for whooper swans wintering in Japan. According to Shimada et al (2014), the duration at stopover sites for whooper swans captured at Lake Kussharo in Hokkaido was 13.4 ± 8.6 days and 17.1 ± 12.1 days for the spring and autumn migrations, respectively.…”

Section: Migration and Ep Flyway Of Tundra Swansmentioning

confidence: 99%

“…Shimada et al (2014) reported on the duration at stopover sites and the number of stopover sites for whooper swans wintering in Japan. According to Shimada et al (2014), the duration at stopover sites for whooper swans captured at Lake Kussharo in Hokkaido was 13.4 ± 8.6 days and 17.1 ± 12.1 days for the spring and autumn migrations, respectively. The number of stopover sites for Whooper Swans captured at Lake Kussharo in Hokkaido was 1.9 ± 0.8 and 1.5 ± 0.5 for the spring and autumn migrations, respectively (Shimada et al, 2014).…”

Section: Migration and Ep Flyway Of Tundra Swansmentioning

confidence: 99%

“…According to Shimada et al (2014), the duration at stopover sites for whooper swans captured at Lake Kussharo in Hokkaido was 13.4 ± 8.6 days and 17.1 ± 12.1 days for the spring and autumn migrations, respectively. The number of stopover sites for Whooper Swans captured at Lake Kussharo in Hokkaido was 1.9 ± 0.8 and 1.5 ± 0.5 for the spring and autumn migrations, respectively (Shimada et al, 2014). The definition of the start and arrival at a site differs between Shimada et al (2014) and the current study; however, our data suggest that the stopover duration is shorter and that the number of stopover sites is a little greater for Tundra Swans.…”

Section: Migration and Ep Flyway Of Tundra Swansmentioning

confidence: 99%

“…For example, Shimada et al (2014) satellite-tracked whooper swans wintering in Japan to reveal migration routes, and described how the migration routes and staging areas of whooper swans overlapped at least partially with those of tundra swans. Recently, outbreaks of avian influenza have occurred in 2008, and infected swans were found in Japan (Newman et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Migration of Tundra Swans (Cygnus columbianus) Wintering in Japan Using Satellite Tracking: Identification of the Eastern Palearctic Flyway

et al. 2016

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Section: Migration and Ep Flyway Of Tundra Swanscontrasting

confidence: 60%

Section: Migration and Ep Flyway Of Tundra Swansmentioning

confidence: 99%

Section: Migration and Ep Flyway Of Tundra Swansmentioning

confidence: 99%

Section: Migration and Ep Flyway Of Tundra Swansmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Migration of Tundra Swans (Cygnus columbianus) Wintering in Japan Using Satellite Tracking: Identification of the Eastern Palearctic Flyway

et al. 2016

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Sensitivity analysis of collision risk at wind turbines based on flight altitude of migratory waterbirds

Kamata

Sato

Mukai

et al. 2023

Ecol Sol and Evidence

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A rapid increase in wind power generation has led to bird collisions becoming a serious problem worldwide. Developing useful sensitivity maps to select low‐risk sites for birds is an urgent issue. For migratory birds, such as geese and swans, that visit different habitats throughout their life cycle, it is important to conduct risk assessments that take into account their behavioural characteristics in each habitat. Geese and swans fly and migrate at varying altitudes (above the ground) ranging from 10 to hundreds of metres. Accurate predictions of avian flight altitudes are essential in assessing the risks of collisions with human‐made structures. We first obtained location data for four species of geese and swans to identify their spring migratory routes within Japan (Bean Goose Anser fabalis and Anser serrirostris, Greater White‐fronted Goose Anser albifrons, Tundra Swan Cygnus columbianus bewickii and Whooper Swan Cygnus cygnus). As all four species used the same roosts and overlapping foraging areas from winter to spring, a single migratory route was defined by integrating the location data of the four species. Flight trajectories were tracked using an ornithodolite. The median flight height for these four species in all landscape types was 150 m or less. Then a LASSO regression model was created with flight altitude obtained as the response variable and topographic and landscape factors as explanatory variables. Trends in flight altitude with environmental differences were similar for the four species, indicating that topographical factors strongly influence flight altitude. Finally, a statistical model was used to predict flight altitudes along migration routes. The sensitivity maps we generated showed that for all four species, most flight heights during spring were within the wind turbine range, suggesting that their risk of collision with wind turbines was greater along their migratory route. Sensitivity maps that accurately reflect avian flight characteristics help provide useful information when considering the location of further wind turbine construction.

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Decrease in population of swans (Cygnus spp.) due to the development of areas adjacent to the wintering site

Hong

Yeum

Kim³

et al. 2023

Wetlands Ecol Manage

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The aim of the present study was to investigate the relationship between Cygnus spp. population trends and land-use change and arti cial development activities in Nakdonggang estuary. Analysis of the 15year-long population change revealed a sharp decline of Cygnus columbianus population in winter, which could be attributed to the Nakdonggang estuary becoming unfeasible as their wintering site. In contrast, there was no sharp decline in the Cygnus cygnus population, although a moderate decline was identi ed. Over the past 30 years, farmland activities decreased by approximately 10% in the areas adjacent to the protected area, resulted from the growth of the urbanized area. The rate of decrease of water body area was evident, identi ed by the urban development through reclamation. Although the abundance of food resources for Cygnus spp. can only be understood indirectly, changes in land use around the wintering site, where the Cygnus spp. can acquire food, are expected to be decisive in their choice of habitat. C. cygnus and C. columbianus, whose individual characteristics have not been speci cally investigated, are generally known to share the same habitat; we could identify a distinct difference in terms of habitat sensitivity. With urban development occurring around the wintering site, C. columbianus was con rmed to be more sensitive to urbanization compared to C. cygnus in Nakdonggang estuary.

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Satellite Tracking of Migrating Whooper SwansCygnuscygnusWintering in Japan.

Cited by 25 publications

References 15 publications

Migration of Tundra Swans (Cygnus columbianus) Wintering in Japan Using Satellite Tracking: Identification of the Eastern Palearctic Flyway

Migration of Tundra Swans (Cygnus columbianus) Wintering in Japan Using Satellite Tracking: Identification of the Eastern Palearctic Flyway

Sensitivity analysis of collision risk at wind turbines based on flight altitude of migratory waterbirds

Decrease in population of swans (Cygnus spp.) due to the development of areas adjacent to the wintering site

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