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