At a rally in Portland, Ore., on Friday morning, Bernie Sanders had an unexpected visitor.

And the crowd went wild.

If you haven't seen it yet, here's the video:

Bernie's evident delight, the crowd's roaring applause and the tiny bird's savoir faire were social media gold. The moment prompted a Twitter response that was completely opposed, in content and tone, to, well, the other big political conversation on social media right now.

And nearly a full day after the bird made its appearance, #BirdieSanders is still trending.

The location of the avian appearance is prompting amusement, too — because of course it was Portland.

IFC's sketch comedy show Portlandia, starring Carrie Brownstein and Fred Armisen, famously featured a sketch called "Put a Bird On It" in their first episode.

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