Tropical Frog's Shrill Mating Song Keeps Southern California Residents Up at Night

PHOTO:The coqui frogs mating call is so loud that people have thought it to be a bird, radio and even house alarm. PlayKABC
WATCH Singing Frogs Invade in Southern California

An invasive species of tiny but loud frogs has been keeping residents in Southern California up at night.

The coqui frog, a small tree frog native to Puerto Rico and more recently Hawaii, has established populations in Southern California, much to the dismay of the locals thanks to the males’ screeching mating calls, ABC-owned station KABC in Los Angeles reported.

“It is extremely loud, and they will just make that ‘coqui’ call over and over ... sometimes all night long,” Greg Pauly, a herpetology curator at the Natural History Museum, told KABC.

The calls are so shrill that people have mistaken them for house alarms. In one instance, the police were even called, he said.

“Beverly Hills police showed up to try to get the homeowner to turn off this broken alarm, but the broken alarm was in fact just a male coqui frog looking for a female,” Pauly said.

PHOTO:A 1-day-old coqui frog is smaller than the size of a fingernail. KABC
PHOTO:A 1-day-old coqui frog is smaller than the size of a fingernail.

The coqui frog was unintentionally introduced to Hawaii in the 1980s, and it quickly spread across the state’s four main islands. It’s now considered a pest species, according to the Hawaii Invasive Species Council, and home values in some parts of Hawaii have decreased because of the frog’s song, KABC reported.

Experts believe the coqui frog made its way to California by hiding in the leaves of tropical plants flown in from Hawaii, according to KABC. The frog’s tiny size may have helped it arrive in the continental U.S. undetected.

PHOTO:The coqui frog is native to Puerto Rico and later appeared in Hawaii. The species is thought to have invaded Southern California by hiding in things like plants that come in from Hawaii. KABC
PHOTO:The coqui frog is native to Puerto Rico and later appeared in Hawaii. The species is thought to have invaded Southern California by hiding in things like plants that come in from Hawaii.

Coqui frogs prefer wet conditions but can survive Southern California’s dry climate by hanging around sprinkler systems at homes and plant nurseries, KABC reported.

Animal authorities are trying to keep the frogs’ reproduction contained until the summer, when the weather will be drier.

While the call may be music to female coquis, it is designed to repel other males during mating season, according to the National Wildlife Federation.