Differential stopover of blackcap (Sylvia atricapilla) by sex and age at Eilat, Israel

R. Yosef; A. Wineman

doi:10.1016/j.jaridenv.2009.09.004

Differential stopover of blackcap (Sylvia atricapilla) by sex and age at Eilat, Israel

R. Yosef, A. Wineman

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We studied the stopover ecology of Blackcaps in Eilat, Israel, at the northern edge of the Saharan desert crossing. We investigated the Blackcaps with regard to differential migration by sex or age class in spring and autumn, and the stopover site in spring and autumn were compared. Using data from 1984 to 2003, we studied stopover length and fat deposition patterns differentiated by sex. In spring, Blackcap females remained in Eilat significantly longer than males. This suggests that males maintain a migration strategy of time-minimization, while females place more importance on energy-maximization. This difference is probably due to upcoming reproductive roles at the breeding grounds.

Original language	English
Pages (from-to)	360-367
Number of pages	8
Journal	Journal of Arid Environments
Volume	74
Issue number	3
DOIs	https://doi.org/10.1016/j.jaridenv.2009.09.004
State	Published - 1 Mar 2010
Externally published	Yes

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Ecology
Earth-Surface Processes

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10.1016/j.jaridenv.2009.09.004

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title = "Differential stopover of blackcap (Sylvia atricapilla) by sex and age at Eilat, Israel",

abstract = "We studied the stopover ecology of Blackcaps in Eilat, Israel, at the northern edge of the Saharan desert crossing. We investigated the Blackcaps with regard to differential migration by sex or age class in spring and autumn, and the stopover site in spring and autumn were compared. Using data from 1984 to 2003, we studied stopover length and fat deposition patterns differentiated by sex. In spring, Blackcap females remained in Eilat significantly longer than males. This suggests that males maintain a migration strategy of time-minimization, while females place more importance on energy-maximization. This difference is probably due to upcoming reproductive roles at the breeding grounds.",

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AB - We studied the stopover ecology of Blackcaps in Eilat, Israel, at the northern edge of the Saharan desert crossing. We investigated the Blackcaps with regard to differential migration by sex or age class in spring and autumn, and the stopover site in spring and autumn were compared. Using data from 1984 to 2003, we studied stopover length and fat deposition patterns differentiated by sex. In spring, Blackcap females remained in Eilat significantly longer than males. This suggests that males maintain a migration strategy of time-minimization, while females place more importance on energy-maximization. This difference is probably due to upcoming reproductive roles at the breeding grounds.

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Differential stopover of blackcap (Sylvia atricapilla) by sex and age at Eilat, Israel

Abstract

ASJC Scopus subject areas

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