| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10970832 | Animal Behaviour | 2013 | 8 Pages |
Abstract
⺠Flight altitudes of common swifts were monitored full-season by weather radar. ⺠Common swifts undertake twilight ascents both at dusk and dawn. ⺠Twilight ascents show a temporal mirror symmetry referenced to sunset/sunrise. ⺠Ascent height is positively correlated with atmospheric temperature. ⺠Twilight ascents are probably associated with orientation challenges.
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Authors
Adriaan M. Dokter, Susanne Ã
kesson, Hans Beekhuis, Willem Bouten, Luit Buurma, Hans van Gasteren, Iwan Holleman,