Gull counts on land and from the air

Husum,

Monitoring the breeding population of large gulls with drones can provide numbers that are more accurate and reduce disturbance in the breeding colonies.

Aerial photograph of a gull colony in which herring gulls and herring gulls were recorded.

Detailed image of the of Amrum Odde. Herring Gulls (outlined in pink) and Lesser Black-backed Gulls (outlined in blue) can easily be distinguished by the light vs. dark grey coloration of their wings.

On behalf of the Schleswig-Holstein National Park Administration, our drone team has monitored various breeding colonies in the Schleswig-Holstein Wadden Sea National Park in recent years. This includes the Amrum Odde, the northern tip of the island of Amrum. Here, herring gulls and lesser black-backed gulls breed in joint colonies.

Over a period of three years (2017 to 2019) and in collaboration with Verein Jordsand, the data collected in drone flights was compared to counts in the field. The results were published and discussed in the current issue of the Corax journal.

The results show that drone-based breeding population surveys of the gulls at the Odde can provide more accurate figures than traditional counts in the field. At the same time, disturbance in the breeding colonies is reduced. Since 2020, the gull breeding populations at Amrum Odde have therefore been counted using drones only. 

Here you can find more information about our services and projects regarding drone surveys.

Enners, L., Kersten, A. & Schnurawa, M. (2024)

Bestandserfassung von Silber- und Heringsmöwen Larus argentatus und L. fuscus mittels Drohne und Bodenerfassung an der Amrumer Odde

Corax 26: 49-56