California or Herring Gull (1 Viewer)

[Maroon Jay]

Looks like a third-year gull or a non-breeding adult, but it is only the beginning of August. The photo was taken at Gull Lake in central Alberta.

 

[Ruff-Leg]

Hard to tell from this photo, but the "pulled-taffy" look to the shape of the bill (Pete Dunne's term not mine!) points toward Herring.

 

[AveryBartels]

Agreed with above that this looks better for Herring, while not quite in full adult plumage it shows a pale-ish eye which is another point against California which has dark eyes.