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The Critical Sites Network (CSN) Tool

The Critical Site Network (CSN) Tool

The Critical Site Network (CSN) Tool is an online resource for the conservation of 294 species of waterbirds and the important sites upon which they depend in Africa and Western Eurasia. Leading global conservation organisations working for the protection of waterbirds and their habitats joined forces to develop this tool, strengthening the implementation of the African-Eurasian Migratory Waterbird Agreement (AEWA) and the Ramsar Convention on Wetlands.

The tool makes it easy to obtain information on the sites critical for waterbird species by accessing several independent databases and analysing information at the biogeographical population level, so providing a comprehensive basis for management and decision making. It is designed to help a range of different users from site managers to national authorities and international organisations. The CSN Tool, one of the major achievements of the Wings Over Wetlands (WOW) project, is also an important example of the added value of cooperation between likeminded conservation organisations, international conventions and agreements, governments, UN agencies and other donors.

The CSN Tool supports both AEWA and the Ramsar Convention on Wetlands. It is also relevant to the EU Birds Directive and the Bern Convention’s Emerald Network.


To access the CSN Tool please click here or use this link:

IMPORTANT NOTE: The Critical Site Network tool runs in the Adobe Flash Player and is 807Kb in size. This will take approximately 6s (1 Mbps) to 3m 44s (28.8Kps) to download and only needs to be downloaded once. In addition, the site is best viewed at a screen resolution of 1280x1024.

For further information please see:

Related Publications:

Or contact the CSN Tool Development Team: Szabolcs NagyVicky Jones and Andrew Cottam



Critical Site Network (CSN) Tool Powerpoint Presentation

Presentation of the Wings Over Wetlands (WOW) Project Critical Site Network (CSN) Tool at the 15th Anniversary of AEWA Symposium on 14 June 2010  in The Hague, the Netherlands.








Interviews with the CSN Tool's Development Team

Below you will find a selection of interviews conducted with members of the CSN Tool Development Team during the 15th Anniversary of AEWA Symposium on 14 June 2010  in The Hague, the Netherlands.


Dr. Szabolcs Nagy, Head of Programme and Strategy Biodiversity and Ecological Networks, Wetlands International
Dr. Vicky Jones, Global Flyways Officer, BirdLife International
Mr. Andrew Cottam, Senior Informatics Officer, UNEP World Conservation Monitoring Centre (UNEP/WCMC)
Dr. Lincoln Fishpool, Global Important Bird Area Coordinator, BirdLife International




The Critical Site Network (CSN) Tool

(The release version of the CSN Tool is now available above)

CSN Tool Example of the Lesser Flamingo

CSN Tool Example: Lesser Flamingo


Download the new CSN Tool Flyer in English published on 14 June 2010. Or the Arabic language version of the CSN Tool Flyer published on 8 July 2011.

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Above: Screenshots of the WOW Critical Site Network (CSN) Tool showing some of its functionalities.

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