The famous influx of gulls that stemmed the grasshopper plague in the early days of Salt Lake City has its counterpart in the vicinity of the park.

In the famous Wood River Valley lush pastures grow scarcely above the level of the water table during the summer; and during the melting of snows the entire area is in mild flood condition.

Flocks of gulls were noted busy at work and intently interested. Investigating revealed that mice which had been snugly ensconced in woven grass homes underneath the winter's snow blanket were being forced to abandon their nests due to encroaching water. As they appeared from beneath the shallow snow, sharp eyes discerned them. A flop of wings, the sharp strike of a beak, and another mouse had completed his life cycle.