Encouraging standardized moon-watch counts of nocturnal bird migration, including data acquisition and management
Compiling migration data from regions with high observer density
© Marcel Burkhardt
Analysis tools: Moonwatching
The majority of migrating birds choose to travel in high altitudes at night. Although their calls can be sometimes heard, many birds pass undetected by bird watchers in the night sky. The observation of travelling birds silhouetted against the (full) moon offers a simple method for estimating bird migration at night.
Nocturnal migrant birds can be observed with spotting scopes or telescopes as they pass in front of the full moon. The number of birds per time interval is proportional to the overall intensity of bird migration.
Moon-watching can easily provide first details on local patterns of bird migrations, especially in areas where even basic knowledge is missing. Single observations get much more importance, if they can be incorporated in a comprehensive framework as provided by moon-watch.
Calibrating the moon-watching method - chances and limits.
A quatitative estimate of the spatial and temporal distribution of nocturnal bird migration in south-eastern Europe - a coordinated moon-watch study.
Die Alpen, ein Hindernis im nächtlichen Breitfrontzug - eine grossräumige Übersicht nach Mondbeobachtungen.
Herbstlicher Vogelzug im Alpenraum nach Mondbeobachtungen - Topographie und Wind beeinflussen den Zugverlauf.