Evidence map›Paper›PMID 30305904›Full record

ArticleMovement ecology2018

Miniaturized multi-sensor loggers provide new insight into year-round flight behaviour of small trans-Sahara avian migrants.

Felix Liechti, Silke Bauer, Kiran L Dhanjal-Adams, Tamara Emmenegger, Pavel Zehtindjiev, Steffen Hahn

Open access · goldAbstract read
In one paragraph

Article in Movement ecology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
5.4field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 131 citations in OpenAlex.

  1. Estimating seasonal survival of migratory birds using continuous-time capture-recapture models.Ecological applications : a publication of the Ecological Society of America · 2026
    Article
  2. Low cost of shifting flight altitude in migrating great snipes.The Journal of experimental biology · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Felix Liechti1Swiss Ornithological Institute, Department of Bird Migration, Seerose 1, 6204 Sempach, Switzerland.ORCID 0000-0001-9473-0837
Silke Bauer1Swiss Ornithological Institute, Department of Bird Migration, Seerose 1, 6204 Sempach, Switzerland.
Kiran L Dhanjal-Adams1Swiss Ornithological Institute, Department of Bird Migration, Seerose 1, 6204 Sempach, Switzerland.
Tamara Emmenegger1Swiss Ornithological Institute, Department of Bird Migration, Seerose 1, 6204 Sempach, Switzerland.
Pavel Zehtindjiev2Institute of Biodiversity & Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria.
Steffen Hahn1Swiss Ornithological Institute, Department of Bird Migration, Seerose 1, 6204 Sempach, Switzerland.
Swiss Ornithological Institute · CHBulgarian Academy of Sciences · BG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOver the past decade, the miniaturisation of animal borne tags such as geolocators and GPS-transmitters has revolutionized our knowledge of the whereabouts of migratory species. Novel light-weight multi-sensor loggers (1.4 g), which harbour sensors for measuring ambient light intensity, atmospheric pressure, temperature and acceleration, were fixed to two long-distance migrant bird species - eurasian hoopoe (

resultsThe flight duration from breeding to sub-Saharan African non-breeding sites and back was more variable within than between the species. Great reed warblers were airborne for a total of 252 flight hours and thus, only slightly longer than eurasian hoopoes with 232 h. With a few exceptions, both species migrated predominantly nocturnally - departure around dusk and landing before dawn. Mean flight altitudes were higher during pre- than during post-breeding migration (median 1100 to 1600 m a.s.l.) and flight above 3000 m occurred regularly with a few great reed warblers exceeding 6000 m a.s.l. (max. 6458 m a.s.l.). Individuals changed flight altitudes repeatedly during a flight bout, indicating a continuous search for (more) favourable flight conditions.

conclusionsWe found high variation between individuals in the flight behaviour parameters measured - a variation that surprisingly even exceeded the variation between the species. More importantly, our results have shown that multi-sensor loggers have the potential to provide detailed insights into many fundamental aspects of individual behaviour in small aerial migrants. Combining the data recorded on the multiple sensors with, e.g., remote sensing data like weather and habitat quality on the spatial and temporal scale will be a great step forward to explore individual decisions during migration and their consequences.

Indexed as

ActivityAltitudeBiologgingEurasian hoopoeFlightGreat reed warblerMigrationTiming

Identifiers

PMID30305904
PMCPMC6167888
OpenAlexW2886167202

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.