Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds
12 pages International audience We tested the use of commercially available electronic time–depth recorders (TDRs) to quantify activities and thus total time budgets of seabirds. This new method involved first fitting TDRs onto the birds' bellies (not on their backs), and, secondly, analysing c...
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ftunivnantes:oai:HAL:hal-00189793v1 2023-05-15T15:39:12+02:00 Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds Tremblay, Yann Cherel, Yves Oremus, Marc Tveraa, Torkild Chastel, Olivier Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Norwegian Institute for Nature Research (NINA) 2003 https://hal.science/hal-00189793 https://doi.org/10.1242/jeb.00363 en eng HAL CCSD The Company of Biologists info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.00363 hal-00189793 https://hal.science/hal-00189793 doi:10.1242/jeb.00363 ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.science/hal-00189793 Journal of Experimental Biology, 2003, 206, pp.1929-1940. ⟨10.1242/jeb.00363⟩ foraging behaviour alcid Barents Sea common guillemot Uria aalge [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society info:eu-repo/semantics/article Journal articles 2003 ftunivnantes https://doi.org/10.1242/jeb.00363 2023-02-22T08:49:49Z 12 pages International audience We tested the use of commercially available electronic time–depth recorders (TDRs) to quantify activities and thus total time budgets of seabirds. This new method involved first fitting TDRs onto the birds' bellies (not on their backs), and, secondly, analysing continuous recordings of temperature, light and pressure to differentiate activities on land and at sea. The birds studied were 12 common guillemots Uria aalge rearing chicks at Hornøya, in northern Norway. The method successfully recorded five different activities: at the colony, flying, diving, and resting or active at the sea surface. Overall, common guillemots spent 68% of their time at the colony and 32% at sea. While at sea, the birds spent the majority (77%) of their time at the surface, during which they were active 64% of the time, and rested only 13%. Birds engaged in the costly behaviours of flying and diving for shorter times (11% and 12% of their time at sea, respectively). The method allowed us to differentiate between two types of trips to sea based on the presence (foraging trips: 77% of the total number of trips) or absence (non-foraging trips: 23%) of dives. On average, foraging trips lasted 3.2·h, but most trips were shorter (<1·h), during which the mean estimated travel distance from the colony was 11·km. Diving occurred in bouts of 7.7±6.6 dives (mean ± S.D.). The mean maximum dive depth was 10.2±7.6·m (deepest dive: 37·m), and the mean dive duration and post-dive intervals were 38.7±21.3·s (longest dive: 119·s) and 20±12·s, respectively. Direct and indirect evidence suggests that common guillemots had no difficulty in finding food during the study period, and that the TDRs had minimal effects on the birds' behaviour and physiology. The method is easy to use in the field and is applicable to many other flying seabird species; it is therefore an efficient way of collecting information on time budgets and diving behaviour in the context of various ecological and monitoring studies. Article in Journal/Newspaper Barents Sea common guillemot Northern Norway Uria aalge uria Université de Nantes: HAL-UNIV-NANTES Barents Sea Norway Hornøya ENVELOPE(31.154,31.154,70.388,70.388) Journal of Experimental Biology 206 11 1929 1940 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
foraging behaviour alcid Barents Sea common guillemot Uria aalge [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
spellingShingle |
foraging behaviour alcid Barents Sea common guillemot Uria aalge [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society Tremblay, Yann Cherel, Yves Oremus, Marc Tveraa, Torkild Chastel, Olivier Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
topic_facet |
foraging behaviour alcid Barents Sea common guillemot Uria aalge [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
description |
12 pages International audience We tested the use of commercially available electronic time–depth recorders (TDRs) to quantify activities and thus total time budgets of seabirds. This new method involved first fitting TDRs onto the birds' bellies (not on their backs), and, secondly, analysing continuous recordings of temperature, light and pressure to differentiate activities on land and at sea. The birds studied were 12 common guillemots Uria aalge rearing chicks at Hornøya, in northern Norway. The method successfully recorded five different activities: at the colony, flying, diving, and resting or active at the sea surface. Overall, common guillemots spent 68% of their time at the colony and 32% at sea. While at sea, the birds spent the majority (77%) of their time at the surface, during which they were active 64% of the time, and rested only 13%. Birds engaged in the costly behaviours of flying and diving for shorter times (11% and 12% of their time at sea, respectively). The method allowed us to differentiate between two types of trips to sea based on the presence (foraging trips: 77% of the total number of trips) or absence (non-foraging trips: 23%) of dives. On average, foraging trips lasted 3.2·h, but most trips were shorter (<1·h), during which the mean estimated travel distance from the colony was 11·km. Diving occurred in bouts of 7.7±6.6 dives (mean ± S.D.). The mean maximum dive depth was 10.2±7.6·m (deepest dive: 37·m), and the mean dive duration and post-dive intervals were 38.7±21.3·s (longest dive: 119·s) and 20±12·s, respectively. Direct and indirect evidence suggests that common guillemots had no difficulty in finding food during the study period, and that the TDRs had minimal effects on the birds' behaviour and physiology. The method is easy to use in the field and is applicable to many other flying seabird species; it is therefore an efficient way of collecting information on time budgets and diving behaviour in the context of various ecological and monitoring studies. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Norwegian Institute for Nature Research (NINA) |
format |
Article in Journal/Newspaper |
author |
Tremblay, Yann Cherel, Yves Oremus, Marc Tveraa, Torkild Chastel, Olivier |
author_facet |
Tremblay, Yann Cherel, Yves Oremus, Marc Tveraa, Torkild Chastel, Olivier |
author_sort |
Tremblay, Yann |
title |
Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
title_short |
Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
title_full |
Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
title_fullStr |
Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
title_full_unstemmed |
Unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
title_sort |
unconventional ventral attachment of time–depth recorders as a new method for investigating time budget and diving behaviour of seabirds |
publisher |
HAL CCSD |
publishDate |
2003 |
url |
https://hal.science/hal-00189793 https://doi.org/10.1242/jeb.00363 |
long_lat |
ENVELOPE(31.154,31.154,70.388,70.388) |
geographic |
Barents Sea Norway Hornøya |
geographic_facet |
Barents Sea Norway Hornøya |
genre |
Barents Sea common guillemot Northern Norway Uria aalge uria |
genre_facet |
Barents Sea common guillemot Northern Norway Uria aalge uria |
op_source |
ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.science/hal-00189793 Journal of Experimental Biology, 2003, 206, pp.1929-1940. ⟨10.1242/jeb.00363⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.00363 hal-00189793 https://hal.science/hal-00189793 doi:10.1242/jeb.00363 |
op_doi |
https://doi.org/10.1242/jeb.00363 |
container_title |
Journal of Experimental Biology |
container_volume |
206 |
container_issue |
11 |
container_start_page |
1929 |
op_container_end_page |
1940 |
_version_ |
1766370688071892992 |