| 1. |
Dimorphism in Stercorarius pomarinus (Temminck) |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 1-16
H. N. Southern,
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摘要:
SUMMARY.1Records from the literature are collected about the proportions of dark and pale forms of the Pomatorhine Skua.2The breeding range falls into two areas, one from Novaya Zemlya to north‐west Alaska, the other from the Mackenzie River to west Greenland. In both these areas dark birds are evenly distributed in the proportion of 1 in 5–20, though there is a slight suggestion that they. are less common in the second than in the first region.3This even, distribution contrasts with tile cline in dimorph‐ratio known to exist in the Arctic Skua.4Pomatorhine Skuas fluctuate in breeding strength from year to year. This is probably connected with the lemming
ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07528.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 2. |
Some Weights of African and of Wintering Palsearctic Birds |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 16-29
R. E. Moreau,
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摘要:
SUMMARY.Weights are given for 132 species of African birds and 15 species of Palsarctic birds (collected in winter quarters). For three African species the data admit of some discussion. Apalis m. mhnocephah from 2900–3600 feet are significantly heavier than those from 200–1200 feet. In the Weavers Xitagra n. nigriceps and Xanthophilus aureojlavus breeding and non‐breeding males do not differ in weight. In the Palsarctic migrants it seems that there may be a tendency for most species to weigh less in winter quarters than in E
ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07529.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 3. |
Rensch on the Increase of Heart‐weight in Relation to Body‐weight with Increase in Altitude |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 30-32
R. E. Moreau,
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07530.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 4. |
Additions to the Ornithology of the Mafia Group of Islands |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 33-37
R. E. Moreau,
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07531.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 5. |
Some Additional Remarks on the Phylogeny of the Struthiones |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 37-42
PERCY R. LOWE,
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07532.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 6. |
The Birds of South‐eastern Tibet |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 43-91
F. Ludlow,
N. B. Kinnear,
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07533.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 7. |
Short Notes |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 91-100
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07534.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 8. |
Letters to the Editor |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 100-101
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07535.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 9. |
Obituary |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 101-102
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ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07536.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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| 10. |
Notices of Recent Ornithological Publications |
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Ibis,
Volume 86,
Issue 1,
1944,
Page 102-105
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摘要:
Amadon on Pacific Island Birds.[Birds collected during the Whitney South Sea Expedition.—No. 52. Notes on some Non‐Passerine Genera, 3. Amer. Mus. Nov. no. 1237, 1943, pp. 1–21.]THE IBIS. Vol. 86. APRIL, 1944. Some East African Birds of Prey. By Captain M. E. W. North, M.B.O.U. (Received 4 March, 1943.) (Plates VIII
ISSN:0019-1019
DOI:10.1111/j.1474-919X.1944.tb07537.x
出版商:Blackwell Publishing Ltd
年代:1944
数据来源: WILEY
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Volume 86 issue 1