Additional details on Movements: |
Migration dates:
Kazakhstan: Migration is from late April to mid-June and from late August to mid-October, peaking in September (Wassink and Oreel 2007).
South Korea: Recorded between 28 April and 3 June and between 5 September and 29 October opn Soncheong Island, west of the Korean Peninsula in the Yellow Sea (Moores 2007).
Japan: Three birds, including two adults and one immature, satellite tracked by Higuchi et al. (2005) departed from Japan on 19 September, 22 September, and 29 September. The two adults arrived back in Japan in spring on 128 and 24 May, and the juvenile did not makre the spring migration northward.
Malay Peninsula: Extreme passage dates are 10 September-21 December, with few before the last week of September, and from 31 January to 26 April, with few after the first week of April (Wells 1999). Although birds regularly cross ridges up to 2,000 m, migration mostly follows lowland routes.
Java: Nijman (2001) made autumn migration observations at three localities in Java during the 1998 and 1999 seasons and recorded 269 individuals of this species between 28 September-9 November.
Bali: Germi (2005) made observations at a migration bottleneck site near the easternmost point of Bali on the eastern slopes of the Seraya Range from 24 October-19 November 2004, and he recorded 1,608 individuals of this species.
Migration routes:
Japan: Higuchi et al. (2005) satellite-tracked the migration of two adults and one immature honey buzzards between the breeding grounds in Japan and their winter range. The two adults migrated across the East China Sea, then through China, the Indochina and Malay Peninsula, and Sumatra. One then arrived in Java for the winter, while the other moved up through Borneo to Mindanao, the Philippines, where it wintered. The immature moved along the coast of the South China Sea to reach the Malay Peninsula, where it wintered. In spring migration, the first adult went up the Malay Peninsula, then through inland China, down to North and South Korea, and finally to the breeding grounds in Japan. The other adult followed the autumn route, stopping for a time in Cambodia, and finally reaching the breeding area in Japan. The immature stayed at the wintering site and did not migrate northward. Agostini and Mellone (2007) discussed various reasons why the birds did not take a more direct route to their wintering grounds or on their return to Japan.
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