In 2017, conservationists began moving young ospreys from Scotland to Dorset

Dorset Osprey. Credit: Birds of Poole Harbour In 2017, conservationists began moving young ospreys from Scotland to Dorset. Five years later, the birds bred in southern England for the first time since 1847. A long-term study led by Bournemouth University (BU) has now shown why the project worked and how similar methods could help birds of prey recover more quickly. Published in the Journal of Animal Ecology, the study found that fast population growth depends heavily on a small number of "pioneering pairs." These birds choose to nest far from established breeding colonies, helping the species spread into new areas.Researchers studied 54 years of osprey recolonisation data from northern Scotland. The records showed how nest locations and settlement patterns affect the spread of the species. The data, collected over many decades by the Roy Dennis Wildlife Foundation, provides rare information about how recovering species naturally return to areas they once occupied.Understanding what slows natural recoveryOspreys were once common across Great Britain. Severe persecution, egg collecting, and hunting eventually caused them to disappear as a breeding species by 1916.Natural recovery be...