S.J. Oyler-McCance R.M. Brigham Cameron L. Aldridge 2001 <p>Two distinct grouse were regularly observed at two Greater Sage-Grouse (<i>Centrocercus urophasianus</i>) leks in both 1999 and 2000 in southeastern Alberta. Physically and behaviorally, the birds exhibited characteristics of both Greater Sage-Grouse and Sharp-tailed Grouse (<i>Tympanuchus phasianellus</i>), suggesting they were hybrids. DNA analyses of blood and feather samples indicated that both birds were males with Greater Sage-Grouse mothers and thus, fathers that were likely Sharp-tailed Grouse.</p> application/pdf 10.1650/0010-5422(2001)103[0657:OOGSGS]2.0.CO;2 en Cooper Ornithological Society Occurrence of Greater Sage-Grouse X Sharp-tailed Grouse hybrids in Alberta article