Progne elegans, Taxa Only, Exact Match: 2 Treatments

Progne elegans			Barrows, Walter B., 1883, Birds of the Lower: URUGUAY, BULLETIN OF THE NUTTALL ORNITHOLOGICAL CLUB: A Quarterlg Journal of Ornitlhology, W. H. Wheeler, Printer, 17 Brighton St., Cambridge, Mass.: ORNITHOLOGICAL CLUB, pp. 80-94 : 89	89
Progne elegans			Coria, Oscar R., Quiroga, Oscar B., Navarro, José L., Heredia, Javier, Torres, Ricardo & Lima, Javier, 2021, Lista actualizada de las aves de Santiago del Estero, Argentina, Acta Zoológica Lilloana 65 (1), pp. 42-143 : 105	105