Flying from left to right - in case you can't tell, lol

Can anyone tell what this very rare (in Alberta) bird is - I do know, but I just wondered if anyone else can tell, ha? Taken at Frank Lake (which will probably make it very obvious to those who know that area) on September 3rd. I think this bird image is brilliant in two ways - brilliant lack of closeness and brilliant lack of feather detail. However, I did just want it for my own records : ) Highly zoomed and ccropped, needless to say. Always a thrill to see this species.

"The White-faced Ibis is a fairly recent addition to the bird life of Alberta. It has nested at Pakowki Lake since 1974 and now also breeds at Frank Lake and at Blizzard Lake, south east of Calgary. It spends the winter months in California and Mexico.

It arrives at its Alberta colonies in early May, and leaves in early September. There is some dispersal of individuals after the breeding season, when they have been found as close as Namaka Lake. While there are no records yet from the Weaselhead delta, it seems likely that the first will occur in the fairly near future.

The White-faced Ibis eats aquatic invertebrates and amphibeans. It finds these by probing in the mud of extensive marshes.

The colonial nests are hidden in extensive stands of bulrushes. They are constructed of various kinds of course vegetation, lined with finer material." Written by Andrew Slater on the talkaboutwildlife website.