Výsledky vyhledávání - "R. J. Dowsett"

Autor: J. H. Elgood, R. J. Dowsett, C. H. Fry

Publikováno v: Ibis. 115:1-45

Summary Owing to the regular alternation of wet and dry seasons and to the relatively simple arrangement of vegetation zones, migration is a well-developed phenomenon in the northern tropics of Africa. Nigeria is well placed for its study. While a va

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53c079a34d724486f3c69a174ca87fa3
https://doi.org/10.1111/j.1474-919x.1973.tb02621.x

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The biannual primary moult of Willow Warblers Phylloscopus trochilus in Europe and Africa

Autor: Les G. Underhill, David Pearson, Anthony J. Tree, R. P. Prys-Jones, D. N. Johnson, R. J. Dowsett, S. C. Norman, P. Herroelen, M. R. Lawn

Publikováno v: Ibis. 134:286-297

The Willow Warbler Phylloscopus trochilus is one of the few bird species that undergoes two primary moults a year, a post-nuptial moult in the breeding area and a moult in the wintering area. Primary-moult data for Willow Warblers from Finland, Swede

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https://doi.org/10.1111/j.1474-919x.1992.tb03811.x

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THE LESSER GREY SHRIKE LANIUS MINOR IN AFRICA

Autor: R. J. Dowsett

Publikováno v: Ostrich. 42:259-270

(1971). THE LESSER GREY SHRIKE LANIUS MINOR IN AFRICA. Ostrich: Vol. 42, No. 4, pp. 259-270.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41f64d1c6078d064ec87b6cddf14e531
https://doi.org/10.1080/00306525.1971.9634416

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Flight muscle hypertrophy and ecophysiological variation of Yellow wagtail Motacilla flava races at Lake Chad

Autor: I. J. Ferguson‐Lees, R. J. Dowsett, C. H. Fry

Publikováno v: Journal of Zoology. 167:293-306

During the few days before emigration to the Palaearctic, the weight of Yellow wagtails wintering in Africa doubles. Most of the increase is due to the deposition of fat, as is well known, but a part of it is shown to result from hypertrophy of the p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7edc7e7ab6ec7f0bfdf71d91f24cad05
https://doi.org/10.1111/j.1469-7998.1972.tb03113.x

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