Utah Birds for ID--Antelope Island SP & Framington Bay WMA

[floraphile]

07 Aug 2021 Davis co. UT; Antelope Island SP; abundant salt mud flats (though much less than usual, I was told)

1.  Neotropic Cormorant and 2 Mallards

2.  Clark's Grebe (L), Western Grebe (R)

3.  I think all Greater YLs, but the lack of flank streaking on the rear-most bird...

4.  If not on a nest, I would think male Redhead in eclipse plumage.  Or is it merely on a nest and not nesting?

5.  Ducks...

[Aidan B]

1. Correct

2. Correct

3. All Greater

4. Not sure what it is

5. All look like Mallards to me

[Connor Cochrane]

I'm wondering if the 'Clark's Grebe' is actually a hybrid. Do you have any photos showing the flanks of the bird?

[floraphile]

1 hour ago, Connor Cochrane said:

I'm wondering if the 'Clark's Grebe' is actually a hybrid. Do you have any photos showing the flanks of the bird?

I will look.

[floraphile]

@Connor CochraneI don't have any really good shots of the flanks.  Here is one that shows a bit of the left bird's:  

 

and here is another shot of both birds:

[Connor Cochrane]

I think it’s fine for Clark’s. I just wanted to check because they hybridize fairly often when they breed in the same lake. 

[Bird-Boys]

5 is a domestic mallard