The Bulletin of the Japanese Bird Banding Association
Online ISSN : 2187-2481
Print ISSN : 0914-4307
ISSN-L : 0914-4307
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Volume 28, Issue 1
Displaying 1-4 of 4 articles from this issue
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Research articles
  • Distribution and abundance of Black-faced Bunting Emberiza spodocephala during breeding seasons in forest islands
    Yuzo FUJIMAKI
    2016 Volume 28 Issue 1 Pages 1-8
    Published: 2016
    Released on J-STAGE: October 05, 2016
    DOIhttps://doi.org/10.14491/jbba.MS075
    JOURNAL FREE ACCESS
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    Distribution and abundance of the Black-faced Bunting Emberiza spodocephala were investigated in two forest islands, woods A and B, in the Obihiro University farm in Obihiro, Hokkaido, during breeding seasons, 1979-1984. Population densities of males were 3.9 to 6.1 birds per ha in wood A, and 5.0 to 6.3 birds per ha in wood B. A portion of males returned the same wood after 2 to 6 years, and occupied approximately the same site within the woods. Sixty-three birds were ringed during the study. The percentage of birds confirmed to be alive 1 year after ringing was 35%, and corresponding values were 25% for 2 years, 15% for 3 years, 9% for 4 years, and 11% for 5 years.
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  • Addition of Kamchatka Leaf Warbler Phylloscopus examinandus and Sakhalin Leaf Warbler P. borealoides to Thailand's Avifauna
    Philip D. ROUND, Andrew J. PIERCE, Takema SAITOH, Yoshimitsu SHIGETA
    2016 Volume 28 Issue 1 Pages 9-21
    Published: 2016
    Released on J-STAGE: October 05, 2016
    DOIhttps://doi.org/10.14491/jbba.MS076
    JOURNAL OPEN ACCESS
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    The non-breeding season distributions of some Phylloscopus warblers are poorly known due partly to the difficulties of field identification. We document the addition of Kamchatka Leaf Warbler Phylloscopus examinandus and Sakhalin Leaf Warbler P. borealoides to the avifauna of Thailand based on five individuals and 12 individuals respectively. All P. examinandus were caught and banded on spring (northwards) migration, while the P. borealoides sample included both autumn and spring birds. Their identity was established through assay of the cytochrome c oxidase subunit I (COI) gene (c. 700 bp) of the mitochondrial genome.
    We present biometric data for these birds together with representative samples from the respective sibling species, Arctic Warbler P. borealis and Pale-legged Leaf Warbler P. tenellipes. We suggest that both P. examinandus and P. borealoides winter mainly or predominantly in the Sunda Subregion.
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  • Age determination of Brown Hawk-Owl (Ninox scutulata)
    Norio FUKAI
    2016 Volume 28 Issue 1 Pages 22-28
    Published: 2016
    Released on J-STAGE: October 05, 2016
    DOIhttps://doi.org/10.14491/jbba.MS073
    JOURNAL FREE ACCESS
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    Age determination of Brown Hawk-Owl Ninox scutulata was carried out based on the following: mistnet-captured owls in Tochigi and Niigata Prefecture, central Japan; the images of specimens in Yamashina Institute for Ornithology; and images found in books and websites. The juveniles have tapered rectrices with a broad pale fringe that is as wide as the inner pale bands. The adults, however, have broad, rounded rectrices with a narrow whitish fringe. The juveniles molt body feathers without fright-feathers and rectrices in autumn; therefore, the rectrices are useful in age determination until complete molt the following summer.
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