Thrush in Canada (1 Viewer)

Hello all !

Here I photographed this thrush in Grassland National Park. I hesitate between the gray cheeked thrush and the swainson thrush which both can occur here.
I tried to look at the eye ring to see if it is complete or incomplete but as I have no comparison in the past, I can't really say : i would say it is not complete so it would be gray-cheeked thrush ?
are there any other criteria to look , to help to make the difference ?

thank you very much in advance

Hi unegawaya,

It's a Swainson's Thrush -- note the distinct buffy eyering and buffy face.

thank you !

I hope I will observe a gray cheeked thrush , so i can see the difference !

thank you for reply