Birds of Indian Subcontinent

Der Tagesrhythmus des Stares Sturnus vulgaris und anderer Singvögel in Abisko, Nordschweden

Publication Type:Journal Article
Year of Publication:1978
Authors:Andersson, NÅke, Müller, K
Journal:Ornis Scandinavica
Date Published:1978
ISBN Number:00305693
Keywords:Calcariidae, Calcarius nivalis, Emberiza, Emberiza godlewskii, Emberizidae, Fringilla, Fringilla montifringilla, Fringillidae, Montifringilla, Plectrophenax, Plectrophenax nivalis, Serinus, Serinus canaria, Serinus serinus, Sturnidae, Sturnus, Sturnus vulgaris
Abstract:Registrations of the diel activity of the starling Sturnus vulgaris L. made at nesting-boxes in the vicinity of the Abisko Scientific Research Station (68°21′N, 18°49′E) during 1966-1973 show that this bird is day-active. Its locomotor activity is always synchronized with the 24-h period, a peak of activity occurring at noon and a period of rest at midnight. Various passerines, such as the Brambling Fringilla montifringilla L., Snow Bunting Plectrophenax nivalis L. and Canary Serinus canarius L., kept indoors in the laboratory under conditions of constant temperature but natural changes of light, show a diverging phaseposition in the summer: the start of the activity is displaced to the evening and the rest period to the afternoon. We conclude from this, that in subarctic regions in field conditions, the phase of activity is determined by the temperature during the course of the day and not by the changing light conditions.
Short Title:Ornis Scandinavica
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