ST. GEORGE, Utah (The Blaze/AP) -- A group of migratory birds had enough of flying for one day and began their descent through stormy clouds toward what they must have identified as a prime body of water for rest. But instead, thousands of these birds slammed into a Walmart parking lot, killing some on impact and leaving volunteers to rescue those that survived.
One wildlife expert called the worst downing she's ever seen.
Crews went to work cleaning up the dead birds and rescuing the survivors after the creatures crash-landed in the St. George area Monday night.
By Tuesday evening, volunteers had rescued more than 2,000 birds, releasing them into nearby bodies of water.
"They're just everywhere," said Teresa Griffin, wildlife program manager for the Utah Division of Wildlife Resource's southern region. "It's been nonstop. All our employees are driving around picking them up, and we've got so many people coming to our office and dropping them off."
Officials say stormy conditions probably confused the flock of grebes, a duck-like aquatic bird likely making its way to Mexico for the winter. The birds tried to land in a Cedar City Wal-Mart parking lot and elsewhere.
"The storm clouds over the top of the city lights made it look like a nice, flat body of water. All the conditions were right," Griffin told The Spectrum newspaper in St. George. "So the birds landed to rest, but ended up slamming into the pavement."
No human injuries or property damage have been reported.
It's not uncommon for birds to mistake hard surfaces for water. However, Griffin noted most downing are localized, while "this was very widespread."
"I've been here 15 years and this was the worst downing I've seen," she told the newspaper.
Wildlife officials said they were continuing the rescue effort that started Tuesday afternoon and included an enthusiastic group of volunteers. The Spectrum has more on the volunteers:
Cedar City resident Stephen Gwin was among the volunteers who worked all night and into the day helping DWR officials gather the surviving birds. A wildlife enthusiast with an environmental biology degree, Gwin saw the effort as an opportunity to learn and help animals.
"I have never in my life encountered such a thing," he said. "I've heard of fish die-offs and other strange natural phenomenon, but I've never experienced one before. It was very strange, but very fun."
He added that he probably collected close to 100 birds since he began pitching in around 12:30 a.m. on Tuesday.
"I had never seen (a grebe) up close and I didn't know that much about them," he said. "It brought it all home to me -- I've seen this on T.V. and now I'm living it."
The surviving grebes were gathered up -- some in cardboard boxes -- and dropped into bodies of water in southern Utah's Washington County, including a pond near Hurricane.
Residents who came across remaining grebes were asked to either call wildlife officials or bring the birds to their office.
"If we can put them on a body of water that's not frozen over, they'll have a better chance of survival," said Lynn Chamberlain, a wildlife agency spokesman.
[H/T Business Insider]