Japanese Journal of Ornithology
Online ISSN : 1881-9702
Print ISSN : 0040-9480
Volume 34, Issue 1
Displaying 1-4 of 4 articles from this issue
  • II. Black Woodpecker Dryocopus martius from Winter to Early Spring
    Kenji KOJIMA, Shigeru MATSUOKA
    1985Volume 34Issue 1 Pages 1-6
    Published: August 25, 1985
    Released on J-STAGE: September 28, 2007
    JOURNAL FREE ACCESS
    Black Woodpacker feces were collected, for analysis, from winter to spring in the Tomakomai Experiment Forest of Hokkaido University.
    (1) Eight animal and one plant species of prey were identified.
    (2) The most important food item for both sexes was the carpenter ant Camponotus obscripes during winter (it occupied 80-100% of total numbers of prey). Black woodpeckers foraged on ants at the lower or basal parts of trees. Other ant species and coleoptera were also taken but were of less importance.
    (3) The food preferences changed from winter to spring, with many small ants Lasius niger being taken from early spring onwards.
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  • Madoka TERAUCHI, Kazuo NAKAMURA, Shigeru MATSUOKA, Tadashi MIYASHITA
    1985Volume 34Issue 1 Pages 7-16
    Published: August 25, 1985
    Released on J-STAGE: September 28, 2007
    JOURNAL FREE ACCESS
    (1)Rufous Turtle Doves Streptopelia orientalis using the cultivated fields and forest aroundthe National Agriculture Research Center, Tsukuba were counted from April to November in 1983 and 1984. The number of doves often increased in plots where wheat, barley and corn had just been harvested. On the other hand, the number of them in forests did not show such marked fluctuation.
    (2) An analysis of crop contents from seven doves showed that they were almost exclusively vegetarian with the seeds of wheat and barley making up more than 80% of the contents.
    (3) The materials available to dove's foods were collected from quadrats placed in forest floor and cultivated fields. There was a little vegetable materials in the forest floor, but a large amount of seeds was collected in the plots where crops had just been harvested.
    (4) These results suggest that doves leave their foraging sites where foods had become scarce and aggregate in the sites with a planty of foods, such as plots where crops had just been harvested.
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  • Hirozo MAKI
    1985Volume 34Issue 1 Pages 17-18
    Published: August 25, 1985
    Released on J-STAGE: September 28, 2007
    JOURNAL FREE ACCESS
    The author observed and photo-graphed a stock Dove Columbia oenas at Tobishima, Sakata City, Yamagata Pref. on 3-4 November 1984. This is the first record of occurrence of this west Palearctic species in Japan.
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  • Shingi ITOH
    1985Volume 34Issue 1 Pages 18-19
    Published: August 25, 1985
    Released on J-STAGE: September 28, 2007
    JOURNAL FREE ACCESS
    A juvenile Oriental Ibis Threskiornis melanocephalus (accidental in Japan) was observed at a Little Egret Egretta garzetta roost in Nara City between February and June, 1983. On 16 out of 19 occasions, it landed on the pre-roosting site before roosting, roosted and departed from the roost together with the Little Egrets.
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