Follow-up measures

Telemetric monitoring of Alcides

Objectives and methodology

The measure concerns nesting Torda Penguins and Common Guillemots in the Cap Fréhel colony. The aim is to clarify the ecology of these two species and to learn more about the behavior of these birds in relation to the construction and operation of the park.

The objective is to equip 10 to 15 individuals of Penguins and Guillemots per year, for 3 years, with miniaturized electronic devices during the breeding period.

Field work will take place at Cap Fréhel, with the birds immediately released on site as soon as the GPS is installed, then recaptured a few days later to recover the equipment. The data collected will allow detailed monitoring of their movements and their fishing activities in the Norman Breton Gulf.

The following deliverables will be produced:

Kernel spatial analysis:

Estimation of the probability density function of bird positions at sea, area by area.

Georeferenced maps

Presenting the journeys of equipped birds. 

A database

Raw and metadata.



Analysis of bird activity phases

In order to extract a map of the preferential habitats of birds for their search for food.

The capture and fitting of the Alcidae will be carried out near the cliffs of Cap Fréhel.


Schedule and Status


In development

Monitoring will take place over three years 2023, 2024, 2025.

Monitoring will take place over a period of several months, which will include the collection of data on the alcids of Cap Fréhel as well as the preparation of field work, data analysis and writing of the annual report.

    All follow-up measures

    Reduction measures

    Compensation measures

    Accompanying measures