Otus kennicottii. Education Raptor from Hawks Aloft seen at the World Wetlands Day celebrations at Mesilla Valley Bosque State Park. Yes, you can use the on-camera flash with the Sigma 150-500.
The birds of Norfolk & Lord Howe Islands and the Australasian South Polar quadrant :London :H.F. & G. Witherby,1928.biodiversitylibrary.org/page/58795183