[1991] (Mauser) Monitoring of migratory birds (Eiders) in the Wadden Sea of Lower Saxony in summer (moulting) 1991

Collection of the eider duck population in the Lower Saxony Wadden Sea in summer (Mauser) 1991. In the Wadden Sea of Lower Saxony, since 1986, the eider duck stocks have been recorded twice a year during a tide from the aircraft. These are the Mauser (July/August) and wintering stocks (January/February). The counts take place in coordination with Schleswig-Holstein. The data is part of the Trilateral Monitoring and Assessment Program (TMAP). Monitoring of migratory birds (Eiders) in the Wadden Sea of Lower Saxony in summer (moulting) 1991. The population of migratory birds (Eiders) in Lower Saxony’s Wadden Sea is biyearly determined by aerial flight since 1986. Counts are carried out in July/August during the moult and in January/February and are coordinated with Schleswig-Holstein. The data are part of the trilateral monitoring and assessment program (TMAP). Collection of the eider duck population in the Lower Saxony Wadden Sea in summer (Mauser) 1991. In the Wadden Sea of Lower Saxony, since 1986, the eider duck stocks have been recorded twice a year during a tide from the aircraft. These are the Mauser (July/August) and wintering stocks (January/February). The counts take place in coordination with Schleswig-Holstein. The data is part of the Trilateral Monitoring and Assessment Program (TMAP). Monitoring of migratory birds (Eiders) in the Wadden Sea of Lower Saxony in summer (moulting) 1991. The population of migratory birds (Eiders) in Lower Saxony’s Wadden Sea is biyearly determined by aerial flight since 1986. Counts are carried out in July/August during the moult and in January/February and are coordinated with Schleswig-Holstein. The data are part of the trilateral monitoring and assessment program (TMAP).