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Blackcap Being Measured, Hogganfield Loch
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Glasgow - Hogganfield Loch
Juvenile female blackcap (Sylvia atricapilla) in the process of getting its wings measured after being ringed. This was during a ringing event at Hogganfield Loch in Glasgow, held by the BTO (British Trust for Ornithology) and the Friends of Glasgow's Local Nature Reserves. Notice the brown cap on the female.