Tree Swallow fledglings ready to meet the world. South Fork Preserve, Yolo Co, CA, June 2014. (c) Evelien de Greef

Tree Swallow fledglings ready to meet the world. South Fork Preserve, Yolo Co

Tree Swallow fledglings ready to meet the world. South Fork Preserve, Yolo Co, CA, June 2014. (c) Evelien de Greef

Tree Swallow fledglings ready to meet the world. South Fork Preserve, Yolo Co

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