There are 22 different toad and frog sounds in Kentucky. These include seven true frog calls, eleven tree frog noises, two true toad calls, one spadefoot sound, and one narrow-mouthed frog call.
While some frog calls in Kentucky are well known, including the American Toad’s call and the bullfrog’s “jug-o-rum”, others are more obscure. You might not know the Pickerel Frog’s call or Fowler’s Toad trill, for example.
Eastern Gray Treefrog (Pseudacris versicolor), one source of frog sounds in Kentucky.
For all the examples below, I have included only the males’ mating (or advertisement) calls, as these are by far the most often heard. While frogs make other noises, including alarm, release, and territorial calls, these are often short, tough to identify to species, and not as frequently recorded.
There are 11 species of tree frogs in Kentucky. These creatures share several physical characteristics, including small, narrow bodies and enlarged toe pads to help climb trees or bushes.
Some of the most interesting sounds in this group come from the well-named Barking Treefrog and Bird-voiced Treefrog. Details on all of these and the rest of Kentucky’s tree frog sounds are below.
Note that I have not included Collinses’s Mountain Chorus frog here, as it was only separated from Mountain Chorus Frog recently and audio for this species is difficult to find.
Northern Cricket Frog
Acris crepitans
The advertisement call is a series of clicks than have been described as “two stones being tapped together”. The clicks start slow, then happen two or three at a time, building into a frenzy before slowing again.
Bird-voiced Treefrog
Hyla avivoca
The advertisement call is a series of ringing, musical whistles that last several seconds. Some liken the call to someone whistling for their dog.
Cope’s Gray Treefrog
Hyla chrysoscelis
The mating call is a trill that sounds harsher than the call of the Gray Treefrog. The pulse rate is faster compared to the Gray Treefrog when both are calling in the same area at the same time.
American Green Treefrog
Hyla cinerea
The mating call is a short, nasal “honk!” made once or twice per second. This recording of Green Treefrog sounds from the National Park Service shows a faster call compared to the video.
Barking Treefrog
Hyla gratiosa
The call of the Barking Treefrog actually does resemble the sound of a barking dog! Mating calls are short “aarf” type sounds made every second or so.
Eastern Gray Treefrog
Hyla versicolor
The advertisement call of the gray treefrog is a musical trill that lasts about half a second and is repeated every few seconds. While it is similar to the Cope’s Gray Treefrog call, the pulse rate (speed of the call notes) is significantly slower if both frogs are calling in the same temperature.
Mountain Chorus Frog
Pseudacris brachyphona
The Mountain Chorus Frog makes a raspy trill that rises at the end and repeats about twice each second. It sounds very similar to the Brimley’s Chorus Frog, but their ranges do not overlap.
Spring Peeper
Pseudacris crucifer
One of the most well known sounds in the Eastern United States, the spring peeper’s mating call is a loud, ongoing “peep” that repeats once a second or slightly faster.
Upland Chorus Frog
Pseudacris feriarum
The frog makes a clicking trill that rises at the end. This noise can be tough to tell apart from Boreal, New Jersey, and Midland Chorus Frogs, which sound very similar.
Midland Chorus Frog
Pseudacris triseriata
The Midland Chorus Frog mating call is a rapid clicking trill that lasts less than a second and rises slightly in pitch at the end. It sounds a little like running your finger along the teeth of a comb.
Kentucky True Frog Sounds and Calls
Seven amphibians in Kentucky are considered “true frogs”, meaning they are members of the Ranidae family. These are the typically medium to large-sized “classic” frogs, the ones that most fit the image that pops up in your mind when someone says “frog”.
In Kentucky, true frog soundscome from the Crawfish Frog, Bullfrog, Green Frog, Pickerel Frog, Northern Leopard Frog, Southern Leopard Frog, and Wood Frog.
These frogs feature a range of physical and vocal differences. Read on to learn about the differences among Kentucky’s true frog sounds and calls.
Crawfish Frog
Lithobates areolatus
The mating call of the Crawfish Frog is a one-second-long, low-pitched, nasal snore.
Bullfrog
Lithobates catesbeianus
The bullfrog mating call is a loud, low-pitched “ruuum, ruuum, ruuuum.” They also have a high-pitched alarm call when they suddenly jump into the water if startled.
Green Frog
Lithobates clamitans
The Green Frog makes a sudden, loud “gunk!”. Many liken it to someone plucking a loose banjo string. They usually call in a few times in a row, with volume and pitch decreasing each time.
Pickerel Frog
Lithobates palustris
Pickerel Frogs make a soft snore that lasts about two seconds, sometimes with a few garbled notes or “gunk!” that sounds similar to the Green Frog. The snore of the Pickerel Frog is much shorter than that of the Northern Leopard Frog.
Northern Leopard Frog
Lithobates pipiens
The Northern Leopard Frog’s mating call is a long snore that lasts at least three seconds, and is often followed with grunts or chuckles. The call usually increases in volume until trailing off at the end.
Southern Leopard Frog
Lithobates sphenocephalus
The Southern Leopard Frog quickly repeats a set of five to ten “chucking” notes, often followed by grunts. These chucks get faster in warmer temperatures.
Wood Frog
Lithobates sylvaticus
The Wood Frog’s call is a series of explosive clucks; some have compared this to the sound of hoarse duck quacks.
Toad Calls in Kentucky
There are two true toads (members of the Bufonidae family) in Kentucky: the American Toad and Fowler’s Toad. Check out these calls below.
American Toad Calls
Anaxyrus americanus
The mating call is a musical trill that typically lasts between five and thirty seconds. During the breeding season, males’ make sounds that often alternate or overlap, and have slightly different pitches.
Fowler’s Toad Sounds
Anaxyrus fowleri
Fowler’s Toads make a buzzy trill that lasts between one and five seconds. Some people liken the sound to that of a crying baby or a woman screaming. Fowler’s Toads sometimes hybridize with American Toads, and calls end up sounding like a mix of the two species.
Other Types of Frog Sounds in Kentucky
There are two additional families of frog species represented in Kentucky. These are the spadefoot (Scaphiopodidae) and narrow-mouthed frog (Microhylidae) families. Check out the sounds of these other Kentucky frogs below.
Eastern Spadefoot Calls
Scaphiopus holbrookii
The mating call of the Eastern Spadefoot is an explosive noise that sounds a bit like a person gagging. It’s not the most pleasant sound. The noise is repeated every five to ten seconds.
Eastern Narrow-mouthed Toad
Gastrophryne carolinensis
The Eastern Narrowmouth Toads makes a loud, sometimes startling high-pitched “weeeeee!” It can sound similar to the bleat of a baby animal.
References and Further Reading
This sound guide draws from a number of sources, including several of the following:
Some of the best quality information online about individual frogs can be found at AmphibiaWeb and Animal Diversity Web. These provide some details on calls, among a host of other valuable content.
A whole variety of YouTube channels provide great examples of sounds and calls, several of which are included here. These creators range from passionate individuals to state agencies. If you liked a video embedded here, check out more from these channels.
