Weekly birding round-up: 6 - 12 Mar

Jon Dunn's regular look back at the best birds from around Britain, Ireland and the Western Palearctic. More here >

Europe's Buzzards Are Losing Their Colour Diversity

New research suggests intermediate plumage is becoming dominant across the continent, reducing the striking variation long seen in Common Buzzards. More here >

Finland's Eagle Owls boomed on landfill rats - and declined when the dumps closed

A long-term study suggests decades of waste disposal unintentionally boosted the breeding success of Europe's largest owl before modern recycling changed the food supply. More here >

Spanish Little Swift numbers continue to rise

Once a rarity in Europe, the population of Little Swifts in the Andalusian port of Chipiona is continuing to grow, highlighting the remarkable expansion of this African species into southern Spain. More here >

New technique allows scientists to identify individual birds migrating at night

Researchers using thermal imaging and photography have, for the first time, been able to directly observe and identify birds migrating through the night sky. More here >