Progne subis -Tulsa, Oklahoma, USA -nestboxes-8

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Description: Progne subis English: Nestboxes and gourds for a small colonly of Purple Martins in a back garden in Tulsa, Oklahoma, USA. The photographer was away for Spring Break when the Purple Martins arrived. The Purple Martins arrived between March 13 and March 19, 2009. Five Purple Martins here today and more expected before breeding starts. Date: 20 March 2009. Source: VIDEO - They're Here!. Author: OakleyOriginals.