Buteo Japonicus
Lane Frisch
The eastern buzzard or Japanese buzzard (Buteo japonicus) is a medium to large bird of prey that is sometimes considered a subspecies of the widespread common buzzard (Buteo buteo). Some scientists treated is as a distinct species starting in 2008, but others still treat it as either one or three subspecies. It is native to Mongolia, China, Japan and some offshore islands. At least some birds winter in Southeast Asia. It is similar to the steppe buzzard. It is carnivorous.[3]
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
We satellite-tracked the eastern buzzard (Buteo japonicus) wintering in Japan to delineate both northward and southward migration routes, destinations, and stopover behavior. Twenty-two buzzards were captured and fitted with functional platform transmitter terminals. For these buzzards that departed from the capture sites, we observed a total of 65 northward migrations during 2008-2016 and a total of 55 southward migrations during 2008-2015. In spring, the eastern buzzards migrated eastward along the Seto Inland Sea in the Chugoku region or further inland. In eastern Honshu, they followed two different routes. One was to Hokkaido via the Tsugaru Peninsula from central or northern central Honshu northward along the side of the Sea of Japan in northern Honshu. The other was to Hokkaido via the Shimokita Peninsula, mainly from the Pacific Ocean side of northern Honshu, moving eastward through central Honshu. Of the 17 birds tracked, 10 summered in Sakhalin, three in Hokkaido, three in northern Honshu, and one unknown. In autumn, the buzzards retraced their northward migration routes. Of the 14 birds that were tracked the entire southward migration, 13 (92%) returned to their respective capture sites. One juvenile wintered in an area different from the capture site. Our study contributes to a deeper understanding of the distribution of breeding and wintering grounds and the migration routes of B. japonicus. In addition, the information on migration obtained in this study can contribute toward appropriate environmental impact assessment for wind power facilities in Japan.
The Eastern buzzard or Japanese buzzard (Buteo japonicus) is a medium to large bird of prey that is sometimes considered a subspecies of the widespread common buzzard (Buteo buteo). some scientists treated is as a distinct species starting 2008, but most people still treat it as a subspecies. It is native to Mongolia, China, Japan and some offshore islands. And at least various birds winter in Southeast Asia. It's similar to the steppe buzzard.
The eastern buzzard or Japanese buzzard (Buteo japonicus) is a medium to large bird of prey that is sometimes considered a subspecies of the widespread common buzzard (Buteo buteo). Some scientists treated is as a distinct species starting in 2008, but others still treat it as either one or three subspecies. It is native to Mongolia, China, Japan and some offshore islands. At least some birds winter in Southeast Asia. It is similar to the steppe buzzard.
The Common Buzzard (Buteo buteo) is a medium to large bird of prey, whose range covers most of Europe and extends into Asia. It is usually resident all year, except in the coldest parts of its range, and in the case of one subspecies.
Wind farms along the migration route of birds act as unnatural barriers, and avoiding them during flight may require the expenditure of extra energy. Information regarding cumulative effects of barriers on migrating birds is generally lacking, mainly because of the complexities of monitoring the number of encounters of migratory birds with wind farms and their flight path for avoiding these barriers. It would be desirable to develop a general method for monitoring the rate at which migratory birds encounter wind farms. In this study, we attempted to assess the potential cumulative barrier effects on 17 eastern buzzards (Buteo japonicus) and eight Oriental honey-buzzards (Pernis ptilorhynchus) using global positioning system (GPS) tracking data. We obtained the location data of wind turbines in Japan and migration paths of the birds using GPS loggers and assumed four scenarios that birds could use to avoid the wind turbines along their routes. Although the number of studied individuals was limited and the impact of the cumulative effects are inconclusive at the present stage, the estimated additional distance, time, and energetic cost during one migration were no more than 31.97 km, 75.74 min and 132 kJ, respectively, which were relatively small. Additionally, we showed the possibility that GPS tracking could provide information on migration episodes of birds associated with wind farms and could be a promising method for addressing the cumulative barrier effects. We expect that a higher sampling frequency of locations would enable precise measurement of avoidance flights and energetic costs.
64591212e2