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Kielder Forest Reached 150 Fledged Osprey Chicks Since Breeding Returned in 2009

Juvenile osprey stretching its wings as an adult watches from the nest
Conservation · Population & status

A young male named Kielder became the 150th osprey (Pandion haliaetus) chick to fledge from Kielder Forest since the species returned to breed in Northumberland in 2009. He made his first flight from the Lord Robinson nest, also known as Nest 12, Northumberland Wildlife Trust announced on 12 August 2026.

Ospreys had been absent as breeding birds from Northumberland for more than two centuries before a pair raised three chicks at Kielder in 2009. Seventeen years later, the cumulative total from the forest reached 150 fledged young. The milestone is therefore not the number produced in 2026 alone, but the combined result from Kielder nests since breeding resumed.

Ospreys now breed at multiple nests across the forest rather than only at the original breeding site. The Kielder Osprey Project brings together Forestry England, Northumbrian Water, Northumberland Wildlife Trust, Kielder Trust, Wild Intrigue and Calvert Kielder.

Fledging is only the beginning of the young birds’ transition to independence. Juvenile ospreys remain near the nest while their parents continue to feed them, and they develop their flying and fishing skills around Kielder Water. Within a few weeks they are expected to begin a migration of about 5,000 miles to sub-Saharan Africa.

The partnership is continuing its work after the 150th fledgling and is raising funds for improved cameras, livestreaming equipment and additional nesting platforms. The new milestone therefore marks 17 years since ospreys returned to breed in Northumberland.

Sources and image credit

  1. Northumberland Wildlife Trust — Milestone chick takes flight as 150th osprey fledges at KielderPrimary partnership announcement published 12 August 2026. Confirms the 150th fledgling since 2009, the individual and nest, project history, partnership, post-fledging period and planned investment in cameras and nesting platforms.

Image: William H. Majoros / Wikimedia Commons — juvenile osprey stretching its wings beside an adult at a nest at Falls Lake, North Carolina, USA; representative image of the fledging stage, not a bird from Kielder Forest · CC BY-SA 3.0 · Source

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