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 7, Issue 2
Displaying 1-5 of 5 articles from this issue
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  • Identification of Sex and Age in the Yellow-throated Bunting Emberixza elegans
    Tomohiko IIDA, Kazunari KOHNO
    1992 Volume 7 Issue 2 Pages 33-39
    Published: 1992
    Released on J-STAGE: August 20, 2015
    DOIhttps://doi.org/10.14491/jbba.AR065
    JOURNAL FREE ACCESS
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    This research focused on sexing and aging of the Yellow-throated Bunting Emberiza elegans. Research was implemented along with banding operations in Hiroshima Prefecture during the winters of 1987 through 1992. Sexing from plumage proved relatively easy, except for a few females with black feathers on the face and breast. The following techniques for aging were identified:
    1-MALES Compared to adult males, juvenile males in first winter plumage have more prominent buff tips on black feathers of crown, ear coverts and breasts.
    2-FEMALES Tips of median and greater coverts are conspicuously whiter for adult females; whereas juvenile females in first winter plumage are darker all over.
    3-BOTH SEXES Tips of tail are round and not worn in adults, pointed and worn in first winter plumage juveniles.
    4-BOTH SEXES Tips of primary coverts are round and without buff edges in adults, pointe and with buff edges in first winter plumage juveniles.
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  • Status of shorebirds at Oguchi Lotus Plantation
    Hideki KITAZAWA, Tomokazu WATANABE
    1992 Volume 7 Issue 2 Pages 40-46
    Published: 1992
    Released on J-STAGE: August 20, 2015
    DOIhttps://doi.org/10.14491/jbba.AR066
    JOURNAL FREE ACCESS
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    Fifteen species of shorebirds were observed at Oguchi Lotus Plantation, Nakanoshima, Niigata Prefecture. Fluctuations in the number of individuals were recorded for 1990 and 1991. The data showed that flocks were largest during the spring migration period, with 1,000 Spotted Redshans, 200 Dunlins and about 50 Common Snipe recorded. Autumn flocks were much smaller, and only a few scattered recordings were made during the winter months. No shorebirds were recorded for the summer months.
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