Frogs make other sounds in addition to mating and territoriality calls. They will emit an alarm call as they leap off a pond shore into the water to escape a potential predator. The call may startle the predator and warn other frogs. If a frog is caught by a predator or even held by a person, it may emit a distress call — a loud scream unlike other calls, the scream is produced with the mouth open.
A male frog will croak or chirp when in the frenzy of the breeding pool another male clasps it, attempting to mate. This functions as a release call. Susan Shea is a naturalist, writer, and conservation consultant who lives in Brookfield, Vermont. To ensure a respectful dialogue, please refrain from posting content that is unlawful, harassing, discriminatory, libelous, obscene, or inflammatory. Northern Woodlands assumes no responsibility or liability arising from forum postings and reserves the right to edit all postings.
Thanks for joining the discussion. Illustration by Adelaide Tyrol. Download the Article. Some frogs call in the water, some on nearby rocks or on the bank, and others in trees or on the ground nearby.
Different frog species breed in different kinds of water-bodies, so, not surprisingly, different frog species call from different kinds of water-bodies. The Orange-thighed Tree Frog Litoria xathomera typically calls from trees around temporary ponds, and the Common Eastern Froglet Crinia signifera calls in shallow swamps, flooded glassland and puddles.
Female frogs even have ears tuned into the specific call of their own species, so that they can locate a male of their own species in a chorus of multiple, noisy males. Knowing what each frog species sounds is also a great way for us humans to identify our local frogs, without having to disturb them. Once you learn what each local frog species sounds like, you can survey for frogs just by listening!
Most frog species are nocturnal and are therefore more active, and vocal, after dusk. So night time is the best time to hear frogs calling. Background sounds include the sound recordist's clothing rustling as he quickly walked up to the creek to startle the frog, and a flying insect. This is a 1 second recording of the alarm call of a juvenile bullfrog jumping from the shore into a small creek in Stanislaus County during daylight shown below. Video : Hundreds of bullfrogs make their chirping alarm call as they jump in and out of the water or run across the surface to escape from danger.
Encounter Call and Territorial Sounds A male bullfrog will make a sharp short call when another male bullfrog gets too close to his territory. Bullfrogs also make chirping and grinding or rasping sounds when interacting with each other, including their alarm chirp.
This is a short recording of an encounter call heard at night at an irrigation canal in Imperial County where males were calling. Bullfrog advertisement calls are heard in the background. Video : In this very short video, we see a frog make the short sharp territorial call, then jump towards a rival calling male.
Video : Bullfrogs sitting around a crowded pond interact with each other, making chirping sounds and what appear to be low raspy territorial sounds. Release Call The following sound was made by a large adult female bullfrog shown below on the left found on a dirt road at night in San Diego County. She was handled for a few minutes after which she began to struggle to escape, making a low growling sound.
This is a short recording of the sound made by a struggling adult female bullfrog shown below when she was handled. Distress Scream When an American Bullfrog is under extreme stress, it may emit a loud open-mouthed screaming sound, which is very disturbing to hear. There is a good Youtube video of a bullfrog screaming here. CA Salamanders. Materials provided by Brown University. Note: Content may be edited for style and length. Science News. Story Source: Materials provided by Brown University.
ScienceDaily, 24 May Brown University.
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