Swifts roosting o n poles.---At dusk on 4th September 1965, near the field station on Walney Island, Lancashire, J. Wilson, B. Sutton and I saw a Swift Apus apus repeatedly fly at a telegraph pole and then even tually land on it. It apparently settled there and soon afterwards our attention was drawn to another Swift on top of the flag pole at the field station. In his book Swifts in a Tower (1956...

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