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Bianco G, Ilieva M, Veibäck C, et al. Emlen funnel experiments revisited: methods update for studying compass orientation in songbirds. Ecol Evol. 2016;6(19):6930-6942doi: 10.1002/ece3.2383.
Bianco, G., Ilieva, M., Veibäck, C., Öfjäll, K., Gadomska, A., Hendeby, G., Felsberg, M., Gustafsson, F., & Åkesson, S. (2016). Emlen funnel experiments revisited: methods update for studying compass orientation in songbirds. Ecology and evolution, 6(19), 6930-6942. https://doi.org/10.1002/ece3.2383
Bianco, Giuseppe, et al. "Emlen funnel experiments revisited: methods update for studying compass orientation in songbirds." Ecology and evolution vol. 6,19 (2016): 6930-6942. doi: https://doi.org/10.1002/ece3.2383
Bianco G, Ilieva M, Veibäck C, Öfjäll K, Gadomska A, Hendeby G, Felsberg M, Gustafsson F, Åkesson S. Emlen funnel experiments revisited: methods update for studying compass orientation in songbirds. Ecol Evol. 2016 Sep 07;6(19):6930-6942. doi: 10.1002/ece3.2383. eCollection 2016 Oct. PMID: 28725370; PMCID: PMC5513225.
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Ecol Evol. 2016 Sep 07;6(19):6930-6942. doi: 10.1002/ece3.2383. eCollection 2016 Oct.

Emlen funnel experiments revisited: methods update for studying compass orientation in songbirds.

Ecology and evolution

Giuseppe Bianco, Mihaela Ilieva, Clas Veibäck, Kristoffer Öfjäll, Alicja Gadomska, Gustaf Hendeby, Michael Felsberg, Fredrik Gustafsson, Susanne Åkesson

Affiliations

  1. Centre for Animal Movement Research Department of Biology Lund University Ecology Building SE-223 62 Lund Sweden.
  2. Institute of Biodiversity and Ecosystem Research Bulgarian Academy of Sciences 2 Gagarin street 1113 Sofia Bulgaria.
  3. Division of Automatic Control Department of Electrical Engineering Linköping University SE-581 83 Linköping Sweden.
  4. Computer Vision Laboratory Department of Electrical Engineering Linköping University SE-581 83 Linköping Sweden.

PMID: 28725370 PMCID: PMC5513225 DOI: 10.1002/ece3.2383

Abstract

Migratory songbirds carry an inherited capacity to migrate several thousand kilometers each year crossing continental landmasses and barriers between distant breeding sites and wintering areas. How individual songbirds manage with extreme precision to find their way is still largely unknown. The functional characteristics of biological compasses used by songbird migrants has mainly been investigated by recording the birds directed migratory activity in circular cages, so-called Emlen funnels. This method is 50 years old and has not received major updates over the past decades. The aim of this work was to compare the results from newly developed digital methods with the established manual methods to evaluate songbird migratory activity and orientation in circular cages.We performed orientation experiments using the European robin (

Keywords: Computer vision; image analysis; magnetic alignment; navigation

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