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Volume 23 (2011)
- Issue 2 Pages 47-
- Issue 1 Pages 1-
Volume 23, Issue 1
Displaying 1-4 of 4 articles from this issue
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Research articles
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Shin MATSUI, Satoe KASAHARA, Gen MORIMOTO, Osamu K. MIKAMI, Keisuke UE ...2011 Volume 23 Issue 1 Pages 1-11
Published: 2011
Released on J-STAGE: November 25, 2012
JOURNAL FREE ACCESSThis research was designed to study growth patterns of the Tree sparrow Passer montanus. Body mass, as well as tarsus and natural wing lengths, were measured for two nestlings from the day they hatched to a time just before fledgling. The nestlings studied were in a nest box placed on a tree at the Ikebukuro campus of Rikkyo University. The research was conducted from April to July 2010. The data from the three measured traits were tested against three growth curve models; Logistic, Gompertz, and von Bertalanffy; and the results showed that the Logistic curve provided the best fit. In addition, feather growth was also recorded, and the data indicated that the growth pattern can be used for estimating the age of nestlings.View full abstractDownload PDF (1607K) -
Yuji OKAHISA, Hiromi KONISHI, Kentaro TAKAGI, Gen MORIMOTO2011 Volume 23 Issue 1 Pages 12-18
Published: 2011
Released on J-STAGE: November 25, 2012
JOURNAL FREE ACCESSThis research examined morphological characters useful for age determination of male Narcissus Flycatcher Ficedula narcissina. First summer males showed shorter natural wing and tail lengths than 2nd summer or older, but there were very significant overlaps in the measurements. Tibial feather color changed with age. First summer plumage was all light brown feathers; while a small number of grayish black feathers appeared during the 2nd summer. Birds of 3rd summer or older showed a dense covering of pure black feathers. Iris color was also different with age; from grayish brown in the 1st summer, to brown in the 2nd summer, to reddish brown in the 3rd summer and afterwards. These results show that both tibial feathers and iris color are useful traits for determining the age of male Narcissus Flycatcher.View full abstractDownload PDF (921K)
Observation report
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Shigeru NAKAMURA2011 Volume 23 Issue 1 Pages 19-25
Published: 2011
Released on J-STAGE: November 25, 2012
JOURNAL FREE ACCESSThe first banding record of the Radde's warbler in Oita Prefecture, Japan was obtained on December 5, 2009. The banded bird was identified as distinct from Dusky warbler and Yellow-streaked warbler by the measurements of bill depth and width. Although the skull was fully pneumaticized, the age of the bird was determined as 1st winter based on its worn tail feathers and greyish iris. Sexing was not possible, because the species is not showed sexual dichiromatism.View full abstractDownload PDF (945K)
Viewpoint & Commentary
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Yuzo FUJIMAKI2011 Volume 23 Issue 1 Pages 26-28
Published: 2011
Released on J-STAGE: November 25, 2012
JOURNAL FREE ACCESSThis paper suggests new Japanese common names for two bird species. The current names reflect a misunderstanding of distribution and habitat. The current Japanese name for the Pale-legged warbler Phylloscopus tenellipes is uisuri-mushikui, which means the ‘Ussuli warbler’. Given that this species breeds over a much wider area than just the Ussuri River, the name should be changed to amuru-mushikui or ‘Amur warbler’. The current Japanese name for the Blyth's Reed Warbler Acrocephalus dumetorum is shiberia-yoshikiri or ‘Siberian reed warbler’. This species, however, is distributed widely across the Eurasian continent. This paper proposes that the Japanese name be changed to yabu-yoshikiri or ‘thicket reed warbler’ to reflect the original meaning of the formal species name.View full abstractDownload PDF (625K)
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