Japanese Journal of Ornithology

Studies on the Food Habits of Four Sympatric Species of Woodpeckers

I. Grey-headed Green Woodpecker Picus canus in Winter

Shigeru MATSUOKA, Kenji KOJIMA

1985 Volume 33 Issue 4 Pages 103-111
Published: February 25, 1985
Released on J-STAGE: September 28, 2007

DOIhttps://doi.org/10.3838/jjo1915.33.103

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Fecal droppings of four Grey-headed Green Woodpeckers (three males and one female) which roosted in nest boxes set up on the Forest Observation Tower were collected and analyzed.
(1) Prey identified were 33 animal species and 6 plant species. Among them small ants Lasius niger, seeds of poison ivy Rhus spp., and spiders Clubiona spp. were the three most important food items.
(2) Contents of droppings were very similar between two males whose droppings were collected in the same year. These males and third male, whose droppings were collected in the previous winter also showed similar food habits, though somewhat differed in vegetable matter taken.
(3) The food habits of males and female were also very similar.
(4) Further the contents of droppings collected in the roost and in the daytime were similar to each other.

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Notes on Birds of Dhorpatan, Central Nepal

Hiroyuki MORIOKA

1985 Volume 33 Issue 4 Pages 113-122_2
Published: February 25, 1985
Released on J-STAGE: September 28, 2007

DOIhttps://doi.org/10.3838/jjo1915.33.113

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I stayed at Dhorpatan, about 40km southwest of Dhaulagiri in central Nepal, for about 2 weeks in October 1981, During that period 57 species of birds were collected or observed. These 57 species show clearly the west Himalayan nature of the Dhorpatan avifauna, reflecting the conifer-dominant habitat of the area. Many of the specimens collected were in heavy postnuptial or postjuvenile molt. It is postulated that the birds breeding at and above 3, 500m at Dhorpatan have nestlings in late August, possibly because snow and cold weather delay their breeding until July. My specimens of Parus melanolophus do not seem to provide a support to its hybridization with P. ater, but more evidence is needed to establish the taxonomic status of melanolophus in central Nepal.

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Bird Nesting Data from Okinawa Island

Douglas W. MCWHIRTER

1985 Volume 33 Issue 4 Pages 123-125
Published: February 25, 1985
Released on J-STAGE: September 28, 2007

DOIhttps://doi.org/10.3838/jjo1915.33.123

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[in Japanese]

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Notes on the Okinawa Rail Rallus okinawae: Observations at night and at dawn

Mark BRAZIL

1985 Volume 33 Issue 4 Pages 125-127
Published: February 25, 1985
Released on J-STAGE: September 28, 2007

DOIhttps://doi.org/10.3838/jjo1915.33.125

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[in Japanese]

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Clutch Size of the Varied Tit Parus varius on Kohzu-shima Island

Hiroyoshi HIGUCHI, Masami HASEGAWA

1985 Volume 33 Issue 4 Pages 127-128
Published: February 25, 1985
Released on J-STAGE: September 28, 2007

DOIhttps://doi.org/10.3838/jjo1915.33.127

JOURNAL FREE ACCESS

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The clutch size of Varied Tits on Kohzu-shima (34°15′N, 139°10′E) in the Izu Islands was investigated using nestboxes. The mean±S.D. of clutch size was 5.37±1.01. Clutch sizes were found to be intermediate between, and significantly different from, those of the Honshu mainland population and Miyake-jima island (the next island south of Kohzu-shima) population.

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