Follow-up actions

Telemetric monitoring of Alcides

Objectives and methodology

The measure concerns the nesting Torda Penguins and Troil Guillemots of the Cape Frehel colony. The aim is to clarify the ecology of these two species and to learn more about the behaviour of these birds in relation to the construction and operation of the wind farm.

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.

Fieldwork will take place at Cap Fréhel, with immediate release of the birds on site as soon as the GPS is installed, followed by recapture a few days later for the recovery of the equipment. The data collected will allow detailed monitoring of their movements and fishing activities in the Gulf of Normandy.

The following deliverables will be produced:

Kernel spatial analysis:

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

Geo-referenced maps

Presenting the routes of equipped birds. 

A database

Raw and metadata.



Analysis of bird activity phases

In order to extract a map of the birds' preferred foraging habitats.

The capture and departure of the Alcids will be carried out near the cliffs of Cap Fréhel.


Planning and Status


Under development

The follow-up will take place over three years: 2023, 2024, 2025.

The monitoring will take place over a period of several months, which will include data collection on the alkids of Cape Frehel as well as preparation of fieldwork, data analysis and the drafting of the annual report.

    All follow-up actions

    Reduction measures

    Compensation measures

    Accompanying measures