Own work using: the IUCN Red List spatial data to draw the borders of the Picoides tridactylus range: http://maps.iucnredlist.org/map.html?id=22727137
Credit for the spatial data:
BirdLife International and NatureServe (2014) Bird Species Distribution Maps of the World. 2014. Picoides tridactylus. In: IUCN 2014. The IUCN Red List of Threatened Species. Version 2014.3. http://www.iucnredlist.org. Downloaded on 26 May 2015.
Species account: http://www.iucnredlist.org/details/22727137/0
BirdLife International 2014. Picoides tridactylus. The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 26 May 2015.
Attribution: The author of the work and the IUCN Red List spatial data.
You must provide the appropriate credit for the IUCN Red List spatial data:
BirdLife International and NatureServe (2014) Bird Species Distribution Maps of the World. 2014. Picoides tridactylus. In: IUCN 2014. The IUCN Red List of Threatened Species. Version 2014.3. http://www.iucnredlist.org. Downloaded on 26 May 2015.
Attribution: The author of the work and the IUCN Red List spatial data
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