Can You Explain This Mallard's Behavior?

It’s important for me to remember that commonly seen ducks are no less impressive than rare ones.
For instance, a male mallard is stunning by any standard. The female is beautiful too. The hen in this video illustrates this perfectly when she lifts herself from the water to shake off her wings. (I think you will enjoy this. I edited a segment so that it’s in slow motion and I froze a particularly nice pose.)
The male’s behavior drew my attention. You will see why in this video. He makes a call and bobs and jerks his head in a way I have never seen. I looked at Cornell websites and xeno-canto but couldn’t find a call like this one or an explanation that satisfied me.
Do you know what this behavior means? Is he agitated or is it something else?
I saw this Mallard (Anas platyrhynchos) couple on our local pond in West Sacramento, California, USA on 8 March 2024.
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[@capturingnaturewithsandip]

Nice and beautiful video. Thanks for sharing & big like

[@frankseverson]

Thanks for your kindness.

[@koreanature]

Great Good... !!! I wish you every day of your development.

[@frankseverson]

Thank you.

[@bahbcat]

Sounds and looks usual to me. Male checking around to see if anything is coming.

[@frankseverson]

Thanks for sharing your experience with me.

[@kweeeng4347]

Great footage and beautifully captured. Enjoyed the video but sorry as I do not know their behavior.

[@frankseverson]

Thanks for watching the video and for taking the time to live a comment.

[@RN-fl4qx]

The female was preening and the male was preparing for takeoff. I duck watch and have pet ducks, they bob their heads and stretch their necks out like that when they're getting ready to fly or jump.

[@frankseverson]

@RN-fl4qx Thanks for sharing your expertise.

[@dontmissthelittlethings]

I think that happens after the deed.

[@frankseverson]

Interesting. Have you seen documentation of that or seen it in person?

[@dontmissthelittlethings]

@@frankseverson Saw something like this at the local duck pond.

[@frankseverson]

@@dontmissthelittlethings Thanks so much for sharing that experience.