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They had red beaks!

I couldn't help but notice that too.

Flamingos get their pink color from eating shrimp.
Perhaps these swans eat oil or other black stuff.
Feels a bit dark indeed
but, remember, fear is the mind killer.
Don't fall for it.

They eat oily demonic entities from the deep and dip their breaks into the hearts of men.

That's it, I'm going to ground!

You go ground yourself,
so you don't end up underneath it ( 6 feet under).

I am grounded, I have my feet on the grass. All is well... For now!

Don't catch a cold ;^)
just kidding

I haven't caught a single cold since I saw the black swans. Perhaps this is their terrible dark gift...