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City Cast Portland

City Cast Portland

🐦‍⬛ The mystery of Portland’s winter crows

October 23, 2025 · — Rachel Monahan

crows in a black and white photo on bare tree limbs in front of a tall building.
” There are more crows than swifts, and I think they’re at least as cool as swifts.” — Gary Granger, local crow expert. (Gary Granger)

Good morning! Starting in November, some 20,000 crows descend on Portland to spend the winter months downtown and in the Pearl District. We don’t really understand where they come from, but it's the largest annual wildlife migration the city sees.

Gary Granger, one of the city’s leading crow experts, has spent nearly a decade walking the streets at night, counting crows block by block. He shares what he’s learned about one of Portland’s most fascinating winter rituals 🎧

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Today on City Cast Portland

black crows sit in the trees on a city street lined with buildings and street lights
Crows crowded over Southwest Morrison Street. (Gary Granger)

What Happens When 20,000 Crows End Up in Portland Each Fall

Every year around this time, more than 20,000 crows pour into downtown Portland. At night, they fill the trees, rooftops, and power lines. And honestly, we don’t fully know why they are here and where they come from. Though not an ornithologist, Gary Granger is one of the city’s leading crow experts, after he spent nearly a decade walking the streets at night, counting crows block by block. He shares what he’s learned, how the city’s trying to manage them, and why their nightly arrival is one of Portland’s most fascinating winter rituals.

The hawks are a minor inconvenience to them, because they know the hawks aren't gonna eat them.
Gary Granger, Portland crow expert

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