Waarneming.nl (NL) - Great Grey Shrike Count 2011-2012

Hisko de Vries

doi:10.15468/hjh6r8

Waarneming.nl (NL) - Great Grey Shrike Count 2011-2012

Citation

de Vries H (2020). Waarneming.nl (NL) - Great Grey Shrike Count 2011-2012. Version 1.2. Observation.org. Occurrence dataset https://doi.org/10.15468/hjh6r8 accessed via GBIF.org on 2024-10-04.

Description

Since 2007 every winter a count is organised by Waarneming.nl in order to monitor the dynamics of the Great Grey Shrike populations in The Netherlands in a number of dedicated areas. Volunteer bird watchers select their own area and every winter they count twice, in December and in late January / early February. Also the absence of Great Grey Shrikes was noted (0 counts). The results of these yearly counts are captured in maps that show the presence / absence of these birds (http://waarneming.nl/tel_project_new/gmap/246). For this dataset, covering the winter of 2011 / 2012, in total 538 individual birds were monitored in 444 areas. The dataset contains multiple counts per individual. Result document can be downloaded from http://waarneming.nl/download/klapekstertelling2011-2012.pdf

Sampling Description

Study Extent

n/a

Sampling

The observer(s) investigates the claimed area(s) on two seperate fieldtrips with at least 3 weeks interval.

Quality Control

All observations of this species are validated by the Waarneming.nl validation team. To ensure no mistakes are in the data

Method steps

n/a

Taxonomic Coverages

Lanius excubitor

Lanius excubitor
common name: Great Grey Shrike rank: species

Geographic Coverages

Netherlands

Bibliographic Citations

Contacts

Hisko de Vries
originator
Waarneming.nl
P. Nieuwlandstraat
Utrecht
3514HJ
NL
Telephone: 0613448663
email: hiskodevries@gmail.com
homepage: https://waarneming.nl

Hisko de Vries
metadata author
Waarneming.nl
P. Nieuwlandstraat
Utrecht
3514HJ
NL
Telephone: 0613448663
email: hiskodevries@gmail.com
homepage: https://waarneming.nl

Hisko De Vries
user
email: hiskodevries@gmail.com

Hisko de Vries
administrative point of contact
Waarneming.nl
P. Nieuwlandstraat
Utrecht
3514HJ
NL
Telephone: 0613448663
email: hiskodevries@gmail.com
homepage: https://waarneming.nl