La maison du Lac de Grand-Lieu – France (Audrey Cadou)

Category: MBP newsletter content

Last updated: February 14th, 2023

A warm and dry summer!

During the last summer, we experienced drought, fires and very high temperatures sometimes higher than 40°C!

In spite of the summer heat we saw many beautiful birds on the lake: Squacco Heron, Eurasian Spoonbills, Eurasian Black-winged Stilts, Black-tailed Godwit, Common Avocet, Green Sandpiper, Common Snipe, Black-crowned Night Heron, White Storks, Greylag Geese, etc.

Why was there so many birds on the lake? Unfortunately, the drought caused the disappearance of many wetlands surrounding the lake, gathering birds at Grand-Lieu.

This birds’ density was worrisome, because the avian flu arrived at the end of summer on the lake at the same time of the post-breeding migration! Cyanobacterial blooms also began very early in the season with unprecedented intensity.

Photo: Squacco Heron (Ardeola ralloides), one to two individuals can come in the GrandLieu Lake

Euring General Assembly

On 4 and 5 October, the EURING General Assembly took place at Grand-Lieu Lake Centre. EURING is the coordinating organisation for European bird ringing schemes. The ‘Centre for Research in Biology and Bird Population’ (CRBPO), which is part of the National Museum of Natural History in Paris, was the meeting organiser. In 2022, ACROLA (Ornithological Knowledge and Research Loire Atlantic Ocean Organization) was chosen to host this event in the county. And so, Grand-Lieu Lake Centre collaborated with ACROLA and welcomed nearly 60 scientists from 30 different countries during two days. Discussions were about the migratory bird atlas ( and the impacts of global warming on birds!

Photo: Euring general assembly
Photo: secondary school meeting with birders

A surprising visitor

A young White-tailed Eagle visited the lake for a few weeks this autumn before leaving. But we don't have a photo of this surprising guest!

Closure of the visitor centre

In December, the water level of the Grand-Lieu Lake was still very low! We welcomed our last visitors, as the centre is closed for works from January to May 2023! We have much work to do during the closure: monitoring the site, providing new educational materials, change the website, prepare communication supports, developing projects such as welcoming new audiences: communities and companies! Consequently, we will not be able to take part in WMBD in May, but we hope to participate in October 2023!

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