La Tour du Valat

Article

BirdOriTrack: a new video-tracking program for orientation research with migratory birds

Rachel Muheim, Auteur ; Ian Henshaw, Auteur ; Sissel Sjoberg, Auteur ; Mark E. Deutschlander, Auteur

Dans Journal of Field Ornithology (85(1) MAR 2014)

Experimental research on the orientation of migratory songbirds is traditionally conducted using orientation funnels or automatic registration cages that record the directional activity of individual birds on paper or a computer. Most traditiona[...]

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Article

Fuel reserves affect migratory orientation of thrushes and sparrows both before and after crossing an ecological barrier near their breeding grounds

Mark E. Deutschlander, Auteur ; Rachel Muheim, Auteur

Dans Journal of Avian Biology (40(1) JAN 2009)

Fat reserves influence the orientation of migrating songbirds at ecological barriers, such as expansive water crossings. Upon encountering a body of water, fat migrants usually cross the barrier exhibiting 'forward' migration in a seasonally app[...]

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Article

Light-dependent orientation in European robins.

Rachel Muheim, Auteur ; Johan Bäckman, Auteur ; Susanne Åkesson, Auteur

Dans Vogelwarte (42(1-2) Juli 2003)

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Article

Magnetic compass of migratory Savannah sparrows is calibrated by skylight polarization at sunrise and sunset

Rachel Muheim, Auteur ; Susanne Åkesson, Auteur ; John B. Phillips, Auteur

Dans Journal of Ornithology (148 DEC 2007)

Migratory birds use compass systems derived from the geomagnetic field, the stars, the sun and polarized light patterns. We tested whether birds use a single underlying reference system for calibration of these compasses and, specifically, wheth[...]

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Article

Magnetic compass orientation research with migratory songbirds at Stensoffa Ecological Field Station in southern Sweden: why is it so difficult to obtain seasonally appropriate orientation?

Rachel Muheim, Auteur ; Susanne Åkesson, Auteur ; Johan Bäckman, Auteur ; Sissel Sjoberg, Auteur

Dans Journal of Avian Biology (48(1) JAN 2017)

More than three decades ago, Thomas Alerstam initiated the study of orientation and navigation of migratory songbirds in southern Sweden. Stensoffa Ecological Field Station, located approx. 20 km east of Lund, has since been a primary location f[...]

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Article

Orientation in the high arctic: Experiences from field experiments with migratory passerines.

Susanne Åkesson, Auteur ; Jens Morin, Auteur ; Rachel Muheim, Auteur ; Ulf Ottosson, Auteur

Dans Vogelwarte (42(1-2) Juli 2003)

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Response to R. Wiltschko et al. (J. Ornithol.): Contradictory results on the role of polarized light in compass calibration in migratory songbirds

Rachel Muheim, Auteur ; Susanne Åkesson, Auteur ; John B. Phillips, Auteur

Dans Journal of Ornithology (149(4) OCT 2008)

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