The Bulletin of the Japanese Bird Banding Association
Online ISSN : 2187-2481
Print ISSN : 0914-4307
ISSN-L : 0914-4307
Search
Advanced search
OR
Browse
Search
Volume 24, Issue 1
Displaying 1-5 of 5 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
Research articles
  • A Reconsideration of Sexing by White Spots of Inner Vanes on Primaries in the Spotted Nutcracker Nucifraga caryocatactes japonica
    Norio NISHI
    2012 Volume 24 Issue 1 Pages 1-6
    Published: 2012
    Released on J-STAGE: August 26, 2013
    DOIhttps://doi.org/10.14491/jbba.00027
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    I reconsidered the sex determination technique of using white spots of the inner vanes on primaries in the Spotted Nutcracker Nucifraga caryocatactes japonica. Thirty-two stuffed specimens collected at Yamashina Institute for Ornithology were examined. My results indicate that the existence of the white spot is unsuitable for use in sex determination. There were no significant differences between juvenile males and females in length of the longer axis of the white spot on primaries, or in length of the axis of the white spot on the 4th primary.
    View full abstract
    Download PDF (555K)
  • Observation of Polygynous Behavior in the Brown Dipper Cinclus pallasii during the Mating Season
    Yusuke SAWA
    2012 Volume 24 Issue 1 Pages 7-13
    Published: 2012
    Released on J-STAGE: August 26, 2013
    DOIhttps://doi.org/10.14491/jbba.00024
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The mating system of Cinclidae is basically monogamous, although polygyny occasionally occurs. However, there is no record of polygyny in the Brown Dipper (Cinclus pallasii). In this study, polygynous behavior of male Brown Dippers was observed during the mating season. The breeding home range of Brown Dippers was studied from December 2005 to March 2006 in Takano River, Kyoto Prefecture, central Honshu, Japan. Four dippers were caught and marked with colored plastic bands for field identification. The home ranges were determined by following these individuals, and the areas of the home ranges used were determined by the time-mapping method. During the mating season, one male mated with two females and established a polygynous home range. The male finally bred monogamously as a result of another male invading a part of his home range; however, this observation indicates the possibility of polygyny in the Brown Dipper.
    View full abstract
    Download PDF (608K)
Technical reports
  • A Nest-box Trap for Capturing the Broad-billed Roller Eurystomus orientalis
    Yuichi KIMURA, Seiko MIZUNO
    2012 Volume 24 Issue 1 Pages 14-19
    Published: 2012
    Released on J-STAGE: August 26, 2013
    DOIhttps://doi.org/10.14491/jbba.00023
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    We developed a nest box trap for the Broad-billed Roller Eurystomus orientalis. This capture trap is a technique for monitoring the breeding ecology of this species. Important features of this trap are (1) ease of setting and (2) safety for captured birds. We captured rollers using this trap on 27 occasions at 24 nest boxes in mid-May, 2010. This capture period was during the pre-egg-laying stage. We captured 12 individuals. Ten individuals bred in the nest boxes in which they were captured, one individual bred in a different location, and one individual was missing. In some cases, nest box trap malfunction and avoidance of the trap (i.e., removing a pin from the trap) were observed. On the basis of our results, it appears that the trap is useful for capturing E. orientalis; however, we suggest that some points can be improved, such as changing materials (i.e., pin types and wires). Because capturing during the pre-incubation period and other periods could disturb breeding, we concluded that it is best to capture the rollers during the egg-incubation period.
    View full abstract
    Download PDF (466K)
View point & Commentary
Data reports
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top