scholarly journals Contrasting strategies for wing‐moult and pre‐migratory fuelling in western and eastern populations of Common Whitethroat Sylvia communis

Ibis ◽  
2018 ◽  
Vol 161 (4) ◽  
pp. 824-838 ◽  
Author(s):  
Magdalena Remisiewicz ◽  
Zephné Bernitz ◽  
Herman Bernitz ◽  
Marc S. Burman ◽  
Jacobus M.H. Raijmakers ◽  
...  
Keyword(s):  
Wing Moult ◽  
Sylvia Communis

Wing moult in relation to autumn migration in adult Common Whitethroats Sylvia communis communis

Ibis ◽  
2001 ◽  
Vol 143 (3) ◽  
pp. 580-586 ◽  
Author(s):  
K. SUSANNA S. HALL ◽  
THORD FRANSSON
Keyword(s):  
Autumn Migration ◽  
Wing Moult ◽  
Sylvia Communis

scholarly journals Energy Stores, Oxidative Balance, and Sleep in Migratory Garden Warblers (Sylvia borin) and Whitethroats (Sylvia communis) at a Spring Stopover Site

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Andrea Ferretti ◽  
Scott R McWilliams ◽  
Niels C Rattenborg ◽  
Ivan Maggini ◽  
Massimiliano Cardinale ◽  
...  
Keyword(s):  
Food Intake ◽  
High Energy ◽  
Oxidative Status ◽  
Energy Reserves ◽  
Stopover Site ◽  
Garden Warbler ◽  
Oxidative Balance ◽  
Energy Stores ◽  
Sylvia Borin ◽  
Sylvia Communis

Synopsis Little is known about how songbirds modulate sleep during migratory periods. Due to the alternation of nocturnal endurance flights and diurnal refueling stopovers, sleep is likely to be a major constraint for many migratory passerine species. Sleep may help to increase the endogenous antioxidant capacity that counteracts free radicals produced during endurance flight and reduces energy expenditure. Here, we investigated the relationship between sleep behavior, food intake, and two markers of physiological condition—the amount of energy reserves and oxidative status—in two migratory songbird species, the garden warbler (Sylvia borin) and the whitethroat (Sylvia communis). In garden warblers, birds with high energy stores were more prone to sleep during the day, while this condition-dependent sleep pattern was not present in whitethroats. In both species, birds with low energy stores were more likely to sleep with their head tucked in the feathers during nocturnal sleep. Moreover, we found a positive correlation between food intake and the extent of energy reserves in garden warblers, but not in whitethroats. Finally, we did not find significant correlations between oxidative status and sleep, or oxidative status and energy stores. Despite our study was not comparative, it suggests that different species might use different strategies to manage their energy during stopover and, additionally, it raises the possibility that migrants have evolved physiological adaptations to deal with oxidative damage produced during migration.

Power Capabilities of the Avian Sound-Producing System

1979 ◽  
Vol 78 (1) ◽  
pp. 163-166
Author(s):  
J. H. BRACKENBURY
Keyword(s):  
Body Weight ◽  
Gallus Domesticus ◽  
Sound Power ◽  
Vocal Performance ◽  
Song Thrush ◽  
Intrinsic Muscles ◽  
Sylvia Communis

1. The vocal performance of different species of songbird was compared by measuring the maximum total sound power produced during normal song. This varied from 10 mW/Kg body weight in the linnet Acanthus cannabina and the whitethroat Sylvia communis to 870 mW/Kg in the song-thrush Turdus philomelos. 2. In comparison, the performance of the chicken Gallus domesticus during crowing was approximately 60 mW/Kg. 3. There was some evidence that performance was related to size in the songbirds as a group, the smaller bird being less effective than the larger. 4. Differences in performance are discussed in relation to the presence or absence of intrinsic muscles in the syrinx and to possible effects of scale on the efficiency of the fundamental sound-producing process.

Migration, wing morphometry and wing moult in Spanish and House Sparrows from the eastern Balkan Peninsula

2018 ◽  
Vol 160 (1) ◽  
pp. 271-274 ◽  
Author(s):  
Steffen Hahn ◽  
Dimitar Dimitrov ◽  
Tamara Emmenegger ◽  
Mihaela Ilieva ◽  
Strahil Peev ◽  
...  
Keyword(s):  
Balkan Peninsula ◽  
House Sparrows ◽  
Wing Moult

Common Whitethroat Sylvia communis

2009 ◽  
pp. 456-463
Keyword(s):  
Sylvia Communis

Juvenile wing shape, wing moult and weight in the family Sylviidae

Ibis ◽  
2008 ◽  
Vol 139 (4) ◽  
pp. 617-630 ◽  
Author(s):  
S. C. NORMAN
Keyword(s):  
Wing Shape ◽  
The Family ◽  
Wing Moult

Do Common Whitethroats (Sylvia communis) discriminate against alien eggs?

2003 ◽  
Vol 144 (3) ◽  
pp. 354-363 ◽  
Author(s):  
Petr Prochazka ◽  
Marcel Honza
Keyword(s):  
Sylvia Communis

Changes in body mass and organ size during wing moult in non-breeding greylag geese Anser anser

2005 ◽  
Vol 0 (0) ◽  
pp. 060118052425006-???
Author(s):  
Anthony D. Fox ◽  
Johnny Kahlert
Keyword(s):  
Body Mass ◽  
Organ Size ◽  
Anser Anser ◽  
Greylag Geese ◽  
Wing Moult

Degradation and Seasonal Variation of DDT in Whitethroats Sylvia communis

Oikos ◽  
1974 ◽  
Vol 25 (2) ◽  
pp. 216 ◽  
Author(s):  
B. Persson
Keyword(s):  
Seasonal Variation ◽  
Sylvia Communis
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