Who would spend hours a day watching moose trudge through northern Sweden on their annual spring migration? Lots of people, it turns out.

In fact, “The Great Moose Migration,” an annual Swedish livestream that began on Tuesday, may soon dethrone the opening credits of “Monty Python and the Holy Grail” as humanity’s greatest artistic tribute to the Swedish moose.

Perhaps the power transfer is already over.

“I didn’t really think it would hit,” said Arne Nilsson, 54, speaking of when it started in 2019. “I thought it would be ridiculous,” he added.

Mr. Nilsson, who grew up in the Swedish woods, was wrong. Now, he will devote six hours a day to moderating a Facebook group of over 77,000 fans, many of whom will spend the next three weeks watching moose on SVT, Sweden’s national broadcaster. (The group’s name is self-explanatory: “Vi som gillar den stora algvandringen pa SVT!” or “We who like the great moose migration on SVT!”)

Unlike many other nature programs, which may have music and narration, the moose march broadcast is raw. It is also live. The only “edits” are cuts between the 34 cameras along the migration path.

That’s the draw, Mr. Nilsson said: The moose do not know they are being watched. They certainly do not know they are being watched by zealots live-blogging their minute-by-minute joy of watching the migration.

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