Wildlife experts are continuing to work on the UK’s longest running study of tawny owls.
For more than 40 years, experts from Forestry England have researched the numbers breeding in Kielder Forest, Northumberland.
They have ringed thousands of chicks and developed an unprecedented insight into their lives, confirming they are real home birds who rarely venture more than a quarter-of-a-mile from where they are born.
Martin Davison, an ornithologist with Forestry England, checks one of the chicks (Owen Humphreys/PA)
The study has also allowed ornithologists to find some of the oldest tawnies ever recorded in the wild – with one female almost reaching 21.
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