Ireland’s Migratory Fish: A new series Over the coming days, I will be highlighting Ireland’s diadromous fish: species that migrate between freshwater and the sea during their life cycle. Read the full post here:- x.com/EcofactEcolo...
Will O'Connor
@entosphenus.bsky.social
Ecologist and wildlife photographer.
A major fish kill has been recorded in the Cavan River at Cavan town. This video was recorded during an aquatic survey that I completed on the Cavan River in June 2024. Water quality and habitat conditions were already very poor at that time. Read the full post here:- x.com/EcofactEcolo...
How a riverside greenway has affected the River Inny at Ballymahon: changes between 2022 and 2026. Read the post here:- x.com/EcofactEcolo...
Pollution from a municipal sewage discharge into a salmonid and lamprey stream in Co. Roscommon. This recent video documents the ecological conditions in the receiving watercourse. Our rivers, wildlife and communities deserve better. Read the full post here:- x.com/EcofactEcolo...
Wolftrap Mountain on the Laois-Offaly boundary, yesterday evening. The mountain is thought to be named after the traps once used to catch native Irish wolves. Read the full post here:- x.com/EcofactEcolo...
More ongoing impacts on Freshwater Pearl Mussels (Margaritifera margaritifera) in the River Owenriff, Co. Galway, last week. An SAC containing one of Ireland’s most threatened freshwater species should not be managed like the edge of an ornamental lawn. Read here:- x.com/EcofactEcolo...
Ongoing impacts on Freshwater Pearl Mussels (Margaritifera margaritifera) in the River Owenriff, Co. Galway, last week. Galway County Council issued a derelict site notice for a property beside the river in June 2026, requiring the removal of overgrown vegetation. Read here x.com/EcofactEcolo...
Freshwater Pearl Mussels (Margaritifera margaritifera) covered with silt and algae in the River Owenriff, Co. Galway, last week. Read the full post here:- x.com/EcofactEcolo...
Atlantic salmon (Salmo salar) in the River Corrib in Galway city yesterday afternoon. Read the full post here:- x.com/EcofactEcolo...
Bonelli's Eagle (Aquila fasciata) in Parque Natural de Arribas del Duero, Zamora, Castile and León, Spain, June 2026. This species is listed in Annex I of the Birds Directive and is considered endangered at the European level. Spain holds around 80% of the European population.
Common Carp (Cyprinus carpio) in reservoirs on the upper Río Samburiel, Madrid, Spain, June 2026. These reservoirs form part of the extensive water-supply infrastructure serving the Community of Madrid. Read the full post here:- x.com/EcofactEcolo...
Immature Spanish Imperial Eagle (Aquila adalberti) in Sierra Oeste de Madrid, Spain, June 2026. This species is one of Europe's rarest birds of prey and is listed in Annex I of the EU Birds Directive.
Female Golden Eagle (Aquila chrysaetos) in Parque Natural de Arribes del Duero, Castile and León, Spain, June 2026. The eagle has spread her wings and hunched over her prey in response to the nearby male. This behaviour is known as “mantling”.
Zitting Cisticola (Cisticola juncidis) beside the River Almonte, Extremadura, Spain, May 2026.
Bonelli's Eagle (Aquila fasciata) in Parque Natural de Arribes del Duero, Castile and León, Spain, June 2026. This species is listed in Annex I of the Birds Directive and is considered Endangered at the European level. Spain supports around 80% of the European population.
Black Storks (Ciconia nigra) in Monfragüe National Park, Extremadura, Spain, June 2026. Read the full post here:- x.com/EcofactEcolo...
Griffon Vulture (Gyps fulvus) in Sierra Oeste de Madrid, Spain, June 2026.
Griffon Vultures (Gyps fulvus) in Zamora, Castile and León, Spain, June 2026. Like all vulture species, it was heavily persecuted in the past. However, thanks to conservation efforts, its numbers have recovered, and it is now the most common vulture species in Europe.
Immature Bearded Vulture (Gypaetus barbatus) in the Catalan Pre-Pyrenees, northern Spain. This is Europe’s rarest vulture species and is listed under Annex I of the EU Birds Directive. Read the full post here:- x.com/EcofactEcolo...
Miranda Dam on the River Douro, June 2026. This dam is located on the international section of the Douro, where the river forms the border between Portugal and Spain. Read the full post here:- x.com/EcofactEcolo...
Marsh Harrier (Circus aeruginosus) on the Cáceres plains, Extremadura, Spain, June 2026.
Bonelli's Eagle (Aquila fasciata) pair as viewed from a hide beside the River Douro, Zamora, Castile and León, Spain, June 2026. If you look very closely in the background you will also see a Golden Oriole (Oriolus oriolus) flying past.
Ospreys (Pandion haliaetus) feeding on mullet along the Guadalquivir River in Doñana National Park, Andalucía, Spain. The video also shows the bank erosion caused by the wake and displacement effect of a passing ship. Full post here:- x.com/EcofactEcolo...
Golden Eagle (Aquila chrysaetos) in the Arribes del Duero Special Protection Area (SPA), Zamora, Castile and León, Spain, June 2026. This SPA encompasses the left bank of the River Duero as it flows through the provinces of Zamora and Salamanca, forming the border between Spain and Portugal.
Iberian lynx (Lynx pardinus) in the Sierra de Andújar, Andalusia, Spain. The Iberian lynx has become a flagship species for European nature conservation, showing what can be achieved through sustained biodiversity protection, habitat restoration and species recovery work.
Black Kites (Milvus migrans) in Zamora, Castile and León, Spain, June 2026. This video was taken from a licensed hide in Parque Natural de Arribes del Duero. Read the full post here:- x.com/EcofactEcolo...
Sea Lampreys (Petromyzon marinus) spawning at a site within the Lower River Shannon Special Area of Conservation (SAC). Watch how they move stones and other riverbed material as they construct large spawning nests, known as redds.
Common Buzzards (Buteo buteo) in Sierra Oeste de Madrid, Spain, June 2026. An Egyptian Mongoose (Herpestes ichneumon) also makes a brief appearance at the end of the video.
Golden Eagle (Aquila chrysaetos) in Parque Natural de Arribes del Duero, Zamora, Castile and León, Spain, June 2026.
Cinereous Vulture (Aegypius monachus) in Zamora, Castile and León, Spain, June 2026. This is Europe's largest vulture species and is listed in Annex I of the Birds Directive.