9 2011 Sept 10 Pretty Hawk Late Evening

I would say you are right. Good pictures and find. Apparently there have been quite a few (ie.more than normal but not lots) on the grasslands south of Calgary around Frank Lake. If you go to Frank Lake, they have been seeing a quite a few White-faced Ibis there. It is a very interesting bird and the colours are irridescent. It is nice to catch it flying as well. You may also see another one of these.