Some eagle-eyed birdwatchers spotted a rare Asian avian specimen in the United States, thousands of miles from its homeland.

Birdwatchers reported that a Steller's sea eagle, a species native to Asia, was spotted in Massachusetts last week, approximately 5,000 miles from its home in Russia's Kamchatka Peninsula, Japan, China, and Korea.

"Two hours [drive] is nothing for a bird like this," Nick Lund, advocacy and outreach manager for Maine Audubon, told the Boston Globe. "This is a dream bird, a species I never thought I'd see in the wild."

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Researchers estimate only 5,000 Steller's sea eagles remain, and the rare bird is listed as vulnerable on the International Union for Conservation of Nature Red List of Threatened Species.

Steller's sea eagles are among the heaviest eagles on the planet, weighing 11 to 20 pounds and boasting wingspans of up to 8 feet.

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Those familiar with the species believe it's likely the same specimen that was spotted in Canada and Alaska as early as 2020, leading some to suspect the bird may be lost, according to Smithsonian Magazine. 

"It's almost as far away from your origin as you can be," Andrew Farnsworth, a senior researcher at the Cornell Lab of Ornithology, told the New York Times in November. "It's mind-boggling."