The Univeristy of Arizona study found that helium balloons released in Tucson end up in the Saguaro National Park near Tucson.

Sixty two latex balloons were found hanging on trees, melting on rocks, or scattered throughout a square kilometer in the Park’s Rincon unit east of Tucson. The study says balloons pose a threat to the area because the animals could end up eating the latex or get tangled in it.

The research study also shows the number of balloons discovered there outnumber the amount of tortoises, rattlesnakes and even plastic bags found in the same size area. The study was conducted by a graduate student. The study found wind patterns in Tucson eventually blow balloons to that particular area in the Saguaro National Park.