Research Article
Status and Trends of the Ferruginous Duck’s (Aythya nyroca) Wintering Population in Morocco: Analysis of 35 Years of Winter Census Data (1983-2017)
Table 1
Most important wintering sites of the Ferruginous duck.
| Site name | Average 2008-2017 | Maximum | Occurrence | Number of censuses | census |
| Merja de l’wad Fouwarate | 504 | 1200 | 8 | 19 | 1990 | Merja de Sidi Bou Ghaba | 221 | 400 | 21 | 32 | 1983 | Barrage Hassar | 174 | 516 | 4 | 4 | 2014 | Barrage Mohammed V | 73 | 400 | 4 | 24 | 1984 | Dayet ‘Awa | 53 | 195 | 8 | 29 | 1983 | Barrage Al Wahda | 33 | 99 | 1 | 3 | 2014 | Barrage Zelmou | 26 | 58 | 9 | 10 | 2007 | Barrage Mechra’ Hommadi | 25 | 76 | 3 | 13 | 1983 | Plan d’eau de Dwiyate | 22 | 22 | 5 | 15 | 1983 | Marais du bas Loukkos | 21 | 68 | 20 | 34 | 1984 | Aguelmam Afennourir | 19 | 56 | 3 | 26 | 1983 | Merja Bargha | 16 | 63 | 9 | 26 | 1988 | Aguelmam N’Tifounassine | 14 | 30 | 2 | 21 | 1987 | Réserve royale Aïn Sferjla | 11 | 15 | 2 | 2 | 2009 | Barrage Al Himer | 10 | 10 | 1 | 1 | 2014 | Dayet Ifrah | 9 | 33 | 3 | 29 | 1983 | Dayet Hachlaf | 9 | 24 | 3 | 7 | 1997 | Daya Bennejma | 9 | 17 | 1 | 2 | 2016 | Lagunes de Sidi Moussa-Walidia | 7 | 44 | 5 | 33 | 1983 | Marais de Wad Al Maleh | 7 | 12 | 4 | 6 | 2001 |
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