LAS VEGAS - There is a bit of a mystery at Floyd Lamb Park in Tule Springs.
In the last week, ducks have been found dead, leading to the Nevada Department of Wildlife to investigate.
Until results can come back, there are some changes being made at the small lake there.
Until officials can determine what is causing these ducks to die, no fishing is being allowed.
For people who spend time at the park, the deaths are a cause for concern.
In the scorching desert, Jill Melancon said she's found a peaceful connection to nature at the park.
"It's an oasis here in the desert," Melancon said. "All the trees and seeing the Canadian honking geese being born and growing up."
Melancon said that in the last few weeks, that joy turned to concern when she noticed ducks dying in the pond.
"The ones who hadn't died yet were listing and just kind of bobbing their heads," she said. ‘Finally their heads would go under the water. They would just probably drown."
Las Vegas Councilman Steve Ross said the city of Las Vegas is keeping an eye on the situation.
This week, about 14 mallard duck remains were collected and turned over to the National Wildlife Health Laboratory for testing, along with samples of pond water.
Until test results come back, signs are posted everywhere to remind visitors not to fish.
"It could be absolutely nothing," Ross said. "We're taking an abundance of caution, protect the public, protect the wildlife, protect the kids."
Ross said at this point, nothing is being ruled out as the cause of their deaths -- from the temperature of the water to effects from the Carpenter 1 fire.
"There was a large ash cloud over this area for a few days and that may have contributed to something out here, but we are just not sure yet," Ross said.
The Department of Wildlife said it is even considering avian botulism as the culprit.
The naturally occurring toxin in birds is common according to the department.
With all the possibilities, Ross said the park is safe.
Melancon said even though she doesn't know what's causing the bird deaths just yet, it puts her at ease knowing someone is trying to figure it out.
"That encourages me, because I think people have been trying to figure out what's going on," she said.
Visitors can still feed the ducks at the park. Officials said that other than the 14 or so mallard ducks, no other birds or animals are mysteriously dying.