Dates of Birds First Singing

Species 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
January
Poecile montanus 16.2 25.2   6.2   4.1 28.1 10.1 17.1   1.1   9.1 18.1 11.1 30.1 31.1 18.1 25.1 14.2   6.1 15.2   6.1   9.1
Parus major 25.1 23.12 17.1   4.1 29.1 10.1 13.1   9.1 16.1 26.1 11.1 30.1 18.1 25.1 29.1 14.2 26.1 15.1 28.1 20.1
Cyanistes caeruleus 12.2 17.1 17.1 10.1 25.1 10.1 19.1 15.1 19.1   7.1 11.1 31.1 30.1   4.2 25.1 17.2 27.1 16.1 30.1 20.1
Columba palumbus 17.2 23.2   5.3 10.1 19.3   3.2 18.2 28.2 15.3 16.2 16.1   3.4 21.2 28.2 12.3 30.3 27.1 15.2 13.3 22.1
February
Turdus viscivorus   2.2 25.2   3.2   7.2 19.2 24.1 24.1 24.2 24.2 26.1 11.1   4.3 18.1 15.2 28.1   3.3 27.1 12.2 22.1   3.2
Loxia curvirostra ? 25.3 ?   1.1 -   8.1 - 27.7 ? 17.10 11.1   4.3   3.3 ? ? 25.4 ? ? ?   3.2
Columba oenas   5.3 24.2 16.2   5.2 15.3 12.3   8.2 28.2 18.2 14.2 21.3   6.3   2.2 22.2 10.3 23.4 26.1 16.1   7.3   4.2
Periparus ater ? 16.1   3.2   3.1   9.3 10.1 24.1 15.1   3.2 29.1 11.1 25.2   2.3   3.2 10.3 13.2 16.2 19.1 16.1   7.2
Fringilla coelebs   1.3 25.2 17.2   7.2 23.2 18.2 23.2 25.2 22.2 23.2 22.2 28.2 23.2 10.2   5.3 18.2   4.3 18.2 15.2 18.2
Dryocopus martius ? ?   3.2   4.2 15.3   3.2 23.2 24.2 24.2   8.2 20.2   6.3 10.3 27.2 24.2 24.3 27.1 27.2   5.2 20.2
Chloris chloris ? 25.2   5.3 15.3 24.2   7.2   8.2 27.2 21.2   9.2 24.2   6.3   7.3 15.2 25.2 18.2 ? 17.2   4.3 20.2
Certhia brachydactyla 24.3 16.3 22.4 20.3   9.3 20.2   7.2 15.3 17.3 16.3 22.2   7.3   6.3 28.4   2.4 30.3   7.4 21.2 15.2 21.2
Lophophanes cristatus 17.2 25.2   6.2   7.2 25.2 14.1 25.1 16.3   3.2   7.3 11.1 25.2 30.1 13.3   3.4 21.4 30.1 ? 16.3 21.2
Erithacus rubecula 10.3   2.3 14.3 16.3 22.3 31.1 10.2 15.3   1.3 11.3 25.2 13.3 18.2 15.2 10.3 15.2   7.3 19.2   4.3 22.2
Pyrrhula pyrrhula ? ? ? ? ? ? ? ? ? 17.2 11.2   2.3   5.3 15.2 23.2 16.2 ? 16.2 18.3 22.2
Troglodytes troglodytes 26.2   9.3 14.3 16.3 25.3   3.2 29.1 14.3 18.3   4.3   1.3   8.3 16.2 28.2 13.3   4.3 24.1 18.2 22.2 23.2
Sitta europaea ? 28.3 25.4 28.3 ? ? ? ? 16.3 14.2 22.2 25.4 ? 18.3 13.4 28.3   8.4 17.3 25.2 23.2
Carduelis spinus ? ? 26.3 19.3 ? 16.2 23.2 ? 24.2 ? 15.1   5.3 ?   9.3 ? ? ? 17.2 ? 25.2
March
Dendrocopos major ? ?   3.2   3.1 19.3   3.2   8.2 15.3   8.2 15.3 15.1   4.3   6.3   9.3   2.5 15.3 11.1 15.2 17.3   2.3
Regulus regulus   6.3 21.1   6.2   4.2 19.3 15.1 25.1 11.3 19.1 17.2 11.1   8.3 11.1   6.3 18.3 19.4 30.1 18.2   8.2   3.3
Carduelis flammea ? ? 31.3 15.3 ?   1.4 10.4 ? 23.3 ? ? ? ? ? ? ? ?   8.3 ? ?
Prunella modularis   8.3 28.2 14.3 16.3 10.3   4.3 23.2   3.3 16.3 14.3   1.3   8.3 23.2 10.3 26.3 17.3 12.3 15.2 10.3 15.3
Lanius excubitor ? ? 17.3 18.3 23.3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
[Turdus iliacus]   5.4 13.4 16.3 18.3 22.3 16.2 14.3 11.3 22.3 ? 25.2 ?   5.3 10.3   2.4 19.3   1.4   4.3   2.3 24.3
Turdus pilaris ? ? 16.3 18.3 26.3 28.3 20.4 13.3 23.3 16.3 11.3   8.4   9.3   8.3 17.3 12.3 12.3   1.4 16.3 24.3
Turdus merula 26.2   2.3 18.3 20.3   9.3 23.2   2.3 17.3 14.3   3.3   4.3   9.3 19.2 14.2 23.3 14.3   7.3 19.2 12.3 25.3
Picus viridis ? ? 27.3 ? 20.3   3.3 24.2   1.3 17.3 20.3 21.3   8.4 ?   8.4 ?   1.4 ? 23.3   7.3 28.3
Certhia familiaris 29.3 18.3 31.3 18.3 15.3   6.4   8.2 25.2   5.4   6.4 19.4 19.4 10.3 10.4 18.3 24.4 26.3 18.2   2.3 30.3
April
Asio otus ? ? ? ? ? ?   8.4 ? ? ? ? ? ? ? ? ? ? ? ? ?
Poecile palustris 16.2 25.2   3.2 10.1 28.1 16.2 22.1 15.1 20.2 31.1 23.1 26.2   8.3 11.3 22.3 ? 14.4 ? ? ?
Sturnus vulgaris ? 25.2   5.3   3.2 24.2 20.2   7.2 25.2 27.2 11.3   3.3 19.4 ? ? ? ? 27.1 14.2   1.4 15.4
Carduelis carduelis ? ? 25.4   7.2 ? 18.2 10.2 19.3 22.3 10.4 ? 25.4 ?   9.3 18.3 14.4 ? 20.2   4.4 18.4
Strix aluco   6.3 ? 11.3 24.1   8.2 ? 18.2   9.3 24.2 22.4 ? ? ? ? ? ? ? ? ? ?
Streptopelia decaocto 28.3   3.3 - - - - - - - - - - 13.3 24.4 - 19.3 -   5.5 ? 26.4
May
Emberiza citrinella   6.3 28.2   6.2   9.2 19.3 20.2 23.2 13.3   2.3   3.3   6.3   8.3 12.3   8.3 20.4   5.5 10.3 21.4 20.3 14.5

With help from Bruno Ghysenberghs, Raphaël Thunus.

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