Keywords: Pygochelidon cyanoleuca 1894.jpg Blue-and-white Swallow Hirondelle bleu et blanc http //archive org/stream/monographofhirun02sha page/n203/mode/2up A monograph of the Hirundinidae creator Richard Bowdler Sharpe 1894 PD-old-100 Pygochelidon cyanoleuca Richard Bowdler Sharpe A monograph of the Hirundinidae |