And biologists say another 2,500 were found alive but grounded.
"These are Eared Grebes that have become disoriented by the weather," says Robbie Knight, a biologist with the Dugway Proving Grounds. "It's a pretty common occurrence where you have bad weather it will push birds, flocks of birds to the ground."
The birds were found throughout Tooele County.
A large flock were found the Dugway Proving Grounds. Many more were found dead and alive at a remote spot on highway 196 in Skull Valley.
Those that died basically crash landed.
"They crash landed. they are not the prettiest landing birds," says Tom Becker, a biologists with the state's Division of Wildlife Resources. "They're feet are far back on their body. They're made for water landings not for land."
State and Federal biologists say these Eared Grebe were just returning from their winter habitat and got caught up in Sunday's storm.
Biologists say the Eared Grebe relies heavily on water to survive.
"They need open water for the most part to get going," says Becker.
And while they appear to be struggling, biologists say many of grounded birds will pull through. All they need is a little help.
"Many of them are in the condition if we can just get them on water so they can rest and decide when they want to leave and just fly off on their own power," says Knight.
He grabbed a grounded Eared Grebe and showed ABC 4 News the bird's condition.
"They're in good condition they've got body condition, they're fat," he says. "There's not a lot of wear and tear on their feet. We look at the wings to see if there's any flight weather wear and tear on their wings. this guy's got a little bit of road rash back here on his secondary. but overall they're in good condition."
Becker says it's happened to other flocks of birds. Two years ago he says hundreds of birds were found dead in Cedar City.
The surviving birds will be analyzed. Those with broken wings will be rehabilitated and those in good condition will be transported to water.
"Their method of flight is they run across the surface and get enough speed and take off," Becker says. "If they don't have that it's hard for them to do it on the ground."