A bird calling unseen from inside a nesting hole in the house across the street
There is a small chance that this bird is a Pallid Swift
CitationNick Talbot, IBC1516855. Accessible at hbw.com/ibc/1516855.
Nick Talbot, IBC1516855. Sound recording of Common Swift Apus apus at Madrid City, Spain. Accessible at hbw.com/ibc/1516855.
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