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Keywords from Image Description:
Cheramoeca leucosterna . Whitebacked Swallow Hirondelle dos blanc org page monograph of the Hirundinidae creator Richard Bowdler Sharpe PDold Cheramoeca leucosterna illustrations Richard Bowdler Sharpe monograph of the Hirundinidae Cheramoeca leucosterna Whitebacked Swallow June UTC Cheramoeca leucosterna