?razorbill, Dundee, Scotland (1 Viewer)

[marnixR]

a few days ago i was in Dundee at the borders of the River Tay near the road bridge and saw several birds in the water that i first took to be guillemots
however, on reviewing my pictures, i noticed that some might not be guillemots but razorbills

i've attached four pictures, the first two possibly being razorbills, the next two i'm sure are guillemots

is this assessment correct, or are they all guillemots after all?

 

[Butty]

Yes. First two are immature and adult raz, in that order. Bill-structure.

 

[marnixR]

thank you