[Tweeters] Pied-billed Grebe behavior

[Nancy Morrison]

I watched two Pied-billed Grebe doing an interesting courtship behavior,
but I am confused because one bird was already nesting with another bird. I
loaded the video onto YouTube with the hopes that someone can explain what
is happening.

Thank you.

https://www.youtube.com/watch?v=KQFc912nfeI&t=1s

Nancy Morrison
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