Banff, Canada. More confirmation (2 Viewers)

[testoduro]

Some more birds I'm not sure what they are. Mid August.

1. Many Ring-Billed Gulls by lake Minnewanka near Banff city, but what is the larger juvenile above? A Herring Gull?
2. In an alpine meadow, there were lots of different sparrows. Is this a Chipping Sparrow?
3. Chipping Sparrow? A poor picture, I'm afraid
4. Yellow-Rumped Warbler?

Thanks in advance!

 

[Butty]

4. Yes.

 

[rkj]

The second sparrow is a Chipping, and probably the first as well.

 

[birdmeister]

I agree on all except #2, which looks like an immature White-crowned Sparrow.

 

[testoduro]

Thank you birdmeister, Butty and rkj.
What about the young gull in picture 1? I attach an enlargement of another picture of the same bird.

 

[rkj]

I agree on all except #2, which looks like an immature White-crowned Sparrow.

Yes, that does look right.

 

[Indobirder]

To my untrained eye, I think the gull is a California Gull
Agree with White-crown, Chipping and Yellow-rump

 

[AveryBartels]

To my untrained eye, I think the gull is a California Gull
Agree with White-crown, Chipping and Yellow-rump

I'm a bit out of practice with my Juv. gulls but would also lean towards California due to the narrower bill and apparently longer legs.