Kishkinev, D, Anashina, A, Ishchenko, I and Holland, RA (2019) Anosmic migrating songbirds demonstrate a compensatory response following long-distance translocation: a radio-tracking study. Journal of Ornithology. ISSN 2193-7192

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Several studies have shown that experienced night-migratory songbirds can determine their position, but it has remained a mystery which cues and sensory mechanisms they use, in particular, those used to determine longitude (east–west position). One potential solution would be to use a magnetic map or signpost mechanism like the one documented in sea turtles. Night-migratory songbirds have a magnetic compass in their eyes and a second magnetic sense with unknown biological function involving the ophthalmic branch of the trigeminal nerve (V1). Could V1 be involved in determining east–west position? We displaced 57 Eurasian reed warblers (Acrocephalus scirpaceus) with or without sectioned V1. Sham operated birds corrected their orientation towards the breeding area after displacement like the untreated controls did. In contrast, V1-sectioned birds did not correct for the displacement. They oriented in the same direction after the displacement as they had done at the capture site. Thus, an intact ophthalmic branch of the trigeminal nerve is necessary for detecting the 1,000 km eastward displacement in this night-migratory songbird. Our results suggest that V1 carries map-related information used in a large-scale map or signpost sense that the reed warblers needed to determine their approximate geographical position and/or an east–west coordinate.

Item Type: Article
Additional Information: This is the final published version of the article (version of record). It first appeared online via Springer at - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: Bird navigation · Eurasian Reed Warblers · Olfactory map hypothesis · Anosmia · Zinc sulfate · Automated radio-tracking · Radio telemetry
Subjects: Q Science > QH Natural history
Divisions: Faculty of Natural Sciences > School of Life Sciences
Depositing User: Symplectic
Date Deposited: 21 Nov 2019 11:15
Last Modified: 24 Mar 2021 10:07

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