Bird tracking - GPS tracking of Less…

Occurrence dataset published by Research Institute for Nature and Forest (INBO)

  • 440,437

    Occurrences
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Summary

Full Title

Bird tracking - GPS tracking of Lesser Black-backed Gull and Herring Gull breeding at the Belgian coast

Description

Bird tracking - GPS tracking of Lesser Black-backed Gull and Herring Gull breeding at the Belgian coast is a species occurrence dataset published by the Research Institute for Nature and Forest (INBO). The dataset currently contains over 440.000 occurrences, recorded in 2013 by 27 GPS trackers mounted on 22 Lesser Black-backed Gulls and 5 Herring Gulls breeding at the Belgian coast (see https://lifewatch-inbo.cartodb.com/viz/a12cbfc4-0e4b-11e4-8aa1-0e230854a1cb/public_map for a visualization of the data). The trackers are developed by the University of Amsterdam Bird Tracking System (UvA-BiTS, http://www.uva-bits.nl) and automatically record and transmit the movements of the birds, which allows us and others to study their habitat use and migration behaviour in more detail. Our bird tracking network is set up and maintained in collaboration with UvA-BiTS and the Flanders Marine Institute (VLIZ), and funded for LifeWatch by the Hercules Foundation. The data are released in bulk as open data and are also accessible through CartoDB. See the dataset metadata for contact information, scope and methodology. Issues with the dataset can be reported at https://github.com/LifeWatchINBO/bird-tracking-gull-occurrences/

Purpose

As part of our terrestrial observatory for LifeWatch (http://lifewatch.inbo.be), the Research Institute for Nature and Forest (INBO) is tracking large birds with lightweight, solar powered GPS trackers. The project builds upon the extensive knowledge the INBO has acquired over the last 12 years in studying postnuptial migration, and mate and site fidelity of large gulls, using sightings of colour-marked individuals ringed in Belgium. The data this bird tracking network collects allow us to study the migration patterns and habitat use of the gulls in more detail, and are no longer biased towards locations where observers can see the birds. To allow greater use of the data beyond our research questions, all data are published as open data.

Additional Information

To allow anyone to use these tracking data, we have released the data to the public domain under a Creative Commons Zero waiver (http://creativecommons.org/publicdomain/zero/1.0/). We would appreciate it if you follow these norms for data use (https://github.com/LifeWatchINBO/norms-for-data-use) and at least provide a link to the original dataset. We are always interested to know how you have used or visualized the data, or to provide more information, so please contact us via the contact information provided in the metadata or via https://twitter.com/LifeWatchINBO. The following information is not included in this dataset and available upon request: outliers, temperature, speed, accelerometer data, GPS metadata (fix time, number of satellites used, vertical accuracy), bird biometrics measured during tagging (bill length, bill depth, tarsus length, wing length, body mass), life history data (day of ringing, age, resightings by volunteers), as well as growth data of chicks. All our public bird tracking data are also available through CartoDB (http://lifewatch-inbo.cartodb.com), where users can query the data using SQL via the CartoDB API or download these in various formats (csv, shp, kml, svg, and geosjon). Two tables are of use: bird_tracking, containing all occurrence data and bird_tracking_devices, containing information on the GPS trackers and individual birds. Note that these tables are not standardized to Darwin Core, contain flagged outliers (omitted from the officially published dataset), and include data from other bird species. For more info, see https://github.com/LifeWatchINBO/bird-tracking/blob/master/cartodb/README.md

Temporal coverages

Date range: May 17, 2013 - Feb 12, 2014

Living time period: breeding season 2013

Language of Data

 

Administrative contact
Eric Stienen Stienen
Researcher
Research Institute for Nature and Forest (INBO) Kliniekstraat 25, Brussels, Brussels Capital Region BE, 1070 1070 Brussels Brussels Capital Region Belgium
Metadata author
Peter Desmet
LifeWatch team coordinator
Research Institute for Nature and Forest (INBO) Kliniekstraat 25 1070 Brussels Brussels Capital Region Belgium
Originator
Eric Stienen
Researcher
Research Institute for Nature and Forest (INBO) Kliniekstraat 25 1070 Brussels Brussels Capital Region Belgium

Published by

Research Institute for Nature and Forest (INBO)

Publication Date

Jul 17, 2014

Registration Date

Jul 17, 2014

Served by

INBO IPT

Links

External Data

Metadata Documents

Taxonomic Coverage

The dataset contains tracking data from 22 Lesser Black-Backed Gulls (*Larus fuscus*) and 5 Herring Gulls (*Larus argentatus*) breeding at the Belgian coast. Each individual bird is ringed with a metal leg ring, which unique code is provided in `individualID`. This field can be used to extract tracking data from one individual.

KINGDOM
Animalia (animals)
PHYLUM
Chordata
CLASS
Aves (birds)
ORDER
Charadriiformes
FAMILY
Laridae (gulls)
GENUS
Larus
SPECIES
Larus fuscus (Lesser Black-backed Gull), Larus argentatus (Herring Gull)

440,437 Georeferenced data

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Description

The birds breed at the Belgian coast in two colonies: the port of Zeebrugge and Ostend. Their foraging range includes the west of Belgium, northern more

About

What does this map show?

Geographic Coverage

The birds breed at the Belgian coast in two colonies: the port of Zeebrugge and Ostend. Their foraging range includes the west of Belgium, northern France, the North Sea, and the English Channel. The Lesser Black-backed Gulls migrate south in winter, hibernating in the south of Spain, Portugal, and North Africa. The geospatial extend of the record data is visualized at https://lifewatch-inbo.cartodb.com/viz/8ea629de-9d72-11e3-a723-0ed66c7bc7f3/public_map.

Bird tracking network

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Funding

This bird tracking network is funded for LifeWatch by the Hercules Foundation (http://www.herculesstichting.be/in_English/), with additional contributions from the Terrestrial Ecology Unit (TEREC) at the University of Ghent.

Project Personnel

Principal investigator
Eric Stienen

Associated parties

Author
Luc Lens
Director
Terrestrial Ecology Unit (TEREC) Ghent University, K.L. Ledeganckstraat 35 9000 Ghent Belgium
Author
Willem Bouten
Chair of Computational Geo-Ecology
Institute for Biodiversity and Ecosystem Dynamics (IBED) University of Amsterdam, Science Park 904 1098 XH Amsterdam Netherlands
Author
Francisco Hernandez
Data Centre manager
Flanders Marine Institute (VLIZ) Wandelaarkaai 7 8400 Ostend Belgium

Methodology

Study extent

The birds were trapped and tagged at or near their breeding colony at the Belgian coast. The colony of Zeebrugge is situated in the western part of the port (51.341 latitude, 3.182 longitude) at sites that are not yet used for port activities and on roof tops. The first Herring Gulls (HG) nested here in 1987, followed by the first breeding record of Lesser Black-backed Gull (LBBG) in 1991. In the 1990s the number of breeding pairs strongly increased, with 2,336 pairs of HG and 4,760 pairs of LBBG in 2011. After 2011 the number of gulls strongly declined due to habitat loss and the presence of foxes. In the colony of Ostend (51.233 latitude, 2.931 longitude), breeding started in 1993. Here the number of HG stabilised at about 300 pairs since 2000 and an equal numbers of LBBG since 2010. In Ostend most gulls breed on roof tops. Currently the roofs of the Vismijn and the wood processing company Lemahieu hold most pairs. Most birds were trapped on their nest using a walk-in cage. In 2013 and 2014 respectively 22 and 24 ground-nesting LBBG were caught in the port of Zeebrugge and respectively 5 and 8 HG on the roof of the Vismijn in Ostend. Additionally, in 2014 one ground nesting HG was caught in the port of Zeebrugge and 3 HG were caught with a small canon net when feeding on the Visserskaai in Ostend. We took biometrics of all captured gulls (bill length, bill depth, tarsus length, wing length, and body mass) and a feather sample to determine the sex. The UvA-BiTS GPS trackers were attached to the back of the gull using a harness of Teflon tape. For an overview of the GPS trackers and the individual birds these are mounted on, see https://lifewatch-inbo.cartodb.com/tables/bird_tracking_devices/public

Sampling description

The birds are tracked with the University of Amsterdam Bird Tracking System (UvA-BiTS, http://www.uva-bits.nl). The system is described in Bouten et al. 2013. The lightweight, solar powered GPS trackers periodically record the 3D position and air temperature, and can be configured to collect body movements with the built-in tri-axial accelerometer as well. Measurement intervals are set by the researcher: the actual interval between measurement is provided in samplingEffort as secondsSinceLastOccurrence. The measured data are stored on the tracker, until these can be transmitted automatically and wireless to a base station using the built-in ZigBee tranceiver with whip antenna. This receiver is also used to receive new measurement settings. The spatial range for this communication is restricted to the location of the base station (or antenna network), which is placed near the colony. Data from birds that do not return to the colony cannot be retrieved.

Quality control

Data received by the base stations are automatically harvested, post-processed, and stored in a central PostgreSQL database at UvA-BiTS (http://www.uva-bits.nl/virtual-lab). We periodically export the tracking data to CartoDB for visualization purposes (see the External datasets section), removing test records and flagging outliers (see https://github.com/LifeWatchINBO/bird-tracking/blob/master/cartodb/import-procedure.md). To create this Darwin Core Archive dataset, the data are documented, standardized to Darwin Core using an SQL query (https://github.com/LifeWatchINBO/bird-tracking-gull-occurrences/blob/master/mapping/dwc-occurrence.sql), published at our IPT (http://dataset.inbo.be/bird-tracking-gull-occurrences), and registered with the Global Biodiversity Information System (http://www.gbif.org). Issues or remarks regarding the data or this procedure can be reported at https://github.com/LifeWatchINBO/bird-tracking-gull-occurrences/

Method Steps

  1. Researcher captures bird, takes biometrics, attaches GPS tracker, and releases bird.
  2. Researcher sets a measurement scheme, which can be updated anytime.
  3. GPS tracker records data.
  4. GPS tracker automatically receives new measurement settings and transmits recorded data, when a connection can be established with the base station at the colony.
  5. Recorded data are automatically harvested, post-processed, and stored in a central PostgreSQL database at UvA-BiTS.
  6. LifeWatch INBO team periodically exports tracking data to CartoDB, which is publicly accessible.
  7. LifeWatch INBO team periodically (re)publishes data as a Darwin Core Archive, registered with GBIF.
  8. Data stream stops when bird no longer returns to colony or if GPS tracker no longer functions (typical tracker lifespan: 2-3 years).

References

Bouten W., Baaij E.W., Shamoun-Baranes J., Camphuysen K.C.J. (2013) A flexible GPS tracking system for studying bird behaviour at multiple scales. Journal of Ornithology 154 (2): 571-580. doi:10.1007/s10336-012-0908-1 , http://doi.org/10.1007/s10336-012-0908-1