Acknowledgements

Above all, we thank many skilled volunteer counters who have been collecting species count data year by year in the field.

Special thanks go to the data providers & organisations that are responsible for national data collection and analysis, and provide us with valuable advises and various support for the last update (listed alphabetically by countries and surnames):

Benjamin Seaman, Norbert Teufelbauer (Austria), Antoine Derouaux, Alain Paquet. Jean-Yves Paquet, Anne Weiserbs (Belgium), Iordan Hristov (Bulgaria), Martin Hellicar, Christina Ieronymidou, Derek Pomeroy (Cyprus), Jiří Reif, Zdeněk Vermouzek, Petr Voříšek (Czech Republic), Charlotte Moshøj, Daniel Palm Eskildsen, Thomas Vikstrøm (Denmark), Meelis Leivits, Renno Nellis, Hannes Pehlak (Estonia), Aleksi Lehikoinen, Päivi Sirkiä (Finland), Benoît Fontaine, Frédéric Jiguet, Romain Lorrillière (France), Malte Busch, Martin Flade, Johannes Schwarz, Sven Trautmann (Germany), Theodoros Kominos, Aris Manolopoulos, Danae Portolou (Greece), Károly Nagy, Tibor Szép  (Hungary), Elisabetta de Carli, Simonetta Cutini, Laura Silva (Italy), Ainārs Auniņš, Oskars Keišs, Ieva Mārdega, Dagnis Vasilevskis (Latvia), Petras Kurlavičius, Renata Mackevičienė (Lithuania), Cindy Anders, Gilles Biver (Luxembourg), Arjan Boele, Joost van Bruggen, Kees Koffijberg, Tom van der Meij, Wolf Teunissen, Chris van Turnhout, Jan-Willem Vergeer (Netherlands), Magne Husby, John Atle Kålås, Roald Vang (Norway), Tomasz Chodkiewicz, Przemysław Chylarecki, Lechosław Kuczyński (Poland), Hany Alonso, Rúben Coelho, Julieta Costa, Cátia Gouveia, Guillaume Réthoré, Pedro Rodrigues, António Rosa (Portugal), Brian Burke, Dick Coombes, Lesley Lewis, John O’Halloran, David Tierney, Jerome Walsh (Republic of Ireland), Zoltán Benkő, Cristi Domșa, Ede Gábos, Zoltán D. Szabó, Judit Veres-Szászka (Romania), Jozef Ridzoň, Katarína Slabeyová, Ján Topercer (Slovakia), Ivan Kljun, Primož Kmecl (Slovenia), Marc Anton, Lluís Brotons, Virginia Escandell, Emilio Escudero, David Garcia,  Sergi Herrando, David Martí, Juan Carlos del Moral (Spain),Martin Green, Fredrik Haas, Åke Lindström, Martin Stjernman (Sweden), Christian Rogenmoser, Thomas Sattler, Hans Schmid, Martin Spiess (Switzerland), Sarah Harris, Dario Massimino, David Noble (United Kingdom).

We thank Jana Škorpilová for computation of the indices and indicators in year 2018 (Czech republic).

We are very grateful to Arco van Strien, Adriaan Gmelig Meyling and Thomas van der Meij (all from Statistics Netherlands) who developed a tool for calculation of indices and trends and provided an assistance with a computation procedure.

We thank members of the PECBMS Steering and Technical Group – Richard D. Gregory (RSPB), Ruud P. B. Foppen (SOVON), David G. Noble (BTO), Iván Ramírez (Birdlife International), and Zdeněk Vermouzek (CSO) – for valuable comments and help with data collation and analysis.

Pan-European Common Bird Monitoring Scheme is a joint initiative of the European Bird Census Council (EBCC) and BirdLife International. Since its beginning in 2002, the PECBMS project has been supported by the the Royal Society for the Protection of Birds (RSPB, the BirdLife International Partner in the UK). Since January 2006 the project has been funded by the European Commission as well.

Other important partners of the project are: Statistics Netherlands, Czech Society for Ornithology (CSO, BirdLife Partner in the Czech Republic), British Trust for Ornithology (BTO), Dutch Organisation for Field Ornithology (SOVON), and others.

In the past national data collected and analysed, and provided us with valuable advises and various support (listed alphabetically by surnames):

Olivia Crowe, Malou Fenger, Jernej Figelj, Diane Gonzalez, Zoltán Görögh, Juha Honkala, Michael Fink Jørgensen, Zsolt Nagy, Grzegorz Neubauer, Timme Nyegaard, Georgi Popgeorgiev, Risto A. Väisänen

Tomáš Telenský helped very much with old web presentation (Czech republic).