The six primary predator mouth-call types are open-reed calls, closed-reed calls, howlers, coaxers, diaphragm calls, and bite calls. These categories are based primarily on how the call produces sound, how the hunter controls the reed, and the types of sounds the call is designed to create.

No single call type is best for every hunter or every stand. The right choice depends on the sounds you need, how much control you want, how much time you are willing to practice, and whether you are calling coyotes, foxes, bobcats, mountain lions, raccoons, hogs, or multiple predator species.

The following comparison provides a quick overview of how the major mouth-call types differ. Individual models may vary, but these general characteristics can help narrow the selection process.

An open-reed call has an exposed reed positioned over a tone board. The hunter places the lips or teeth directly on the reed and tone board, then changes pitch by moving along the reed, changing pressure, and controlling airflow.

How Open-Reed Calls Work

Air passing over the exposed reed causes it to vibrate. Moving the contact point toward the reed tip generally leaves more reed free to vibrate and creates a lower pitch. Moving farther down the tone board shortens the vibrating portion of the reed and generally raises the pitch.

The hunter can also change sound by adjusting:

• Lip or tooth position
• Pressure against the reed
• Air pressure
• Hand position around the call
• Call angle
• Rhythm and cadence

Advantages of Open-Reed Calls

• Wide pitch range
• Ability to produce multiple sounds with one call
• Direct control over reed length and tension
• Useful for prey distress and predator vocalizations
• Can produce subtle or high-volume sounds
• Exposed reed is easy to inspect
• Often easier to clear when ice or debris affects the reed

Limitations of Open-Reed Calls

• Require more practice than most closed-reed calls
• Pressure changes can cause unwanted squeals
• Exposed reeds can be damaged during storage
• Reed control may be difficult with cold or numb lips
• Consistent sound production depends on technique

Sounds Commonly Produced

Depending on the reed, tone board, and call design, open-reed calls may produce:

• Rabbit distress
• Bird distress
• Rodent distress
• Fawn distress
• Coyote pup distress
• Ki-yi sounds
• Fox distress
• Whines and yips
• Short howls

Who Should Choose an Open-Reed Call?

Open-reed calls are well suited for hunters who want maximum sound control and are willing to practice. They are particularly valuable for hunters who target several predator species or want one call capable of producing multiple pitches and sound families.

A closed-reed predator call places the reed assembly inside the call body. The hunter blows through the mouthpiece, and the enclosed reed produces a sound within a preset pitch range.

How Closed-Reed Calls Work

Air is directed through an internal reed assembly, often called a voice or reed insert. Because the reed is enclosed and pre-tuned, the hunter does not need to place the lips directly on an exposed reed.

Sound is controlled primarily through:

• Air pressure
• Breath rhythm
• Call duration
• Hand cupping
• Opening and closing the hand around the exhaust
• Changing the call angle and direction

Advantages of Closed-Reed Calls

• Easy for most beginners to operate
• Produces a consistent, repeatable sound
• Requires less direct reed control
• Available in many prey-distress pitches
• Fast to deploy during a stand
• Compact and easy to carry
• Useful as an electronic caller backup

Limitations of Closed-Reed Calls

• Generally provide less pitch range than open-reed calls
• Most models specialize in a narrower sound family
• Internal reeds may be more difficult to inspect
• Moisture can cause enclosed reeds to stick or freeze
• The hunter has less direct control over reed length

Sounds Commonly Produced

Closed-reed predator calls are commonly designed for:

• Cottontail distress
• Jackrabbit distress
• Bird distress
• Rodent distress
• Fox distress
• Fawn distress
• Species-specific prey sounds

Who Should Choose a Closed-Reed Call?

Closed-reed calls are an excellent starting point for new callers who want to focus on rhythm, pauses, volume, and stand setup without learning exposed-reed placement. They are also useful for experienced hunters who want a dependable call that produces a specific sound quickly.

Howlers are mouth calls designed to produce canine vocalizations with greater depth, volume, resonance, and projection than many smaller calls. Most predator howlers are intended primarily for coyotes, although specialized models may produce wolf or other canine vocalizations.

How Howlers Work

Many howlers use an open reed combined with a larger barrel, bell, horn, or resonance chamber. The reed creates the initial tone, while the call body amplifies and shapes the sound.

The hunter controls a howl through:

• Reed position
• Lip or tooth pressure
• Airflow
• Howl length
• Pitch movement
• Voice inflection
• Hand position around the bell

Sounds Produced by Howlers

• Lone howls
• Long howls
• Female invitation howls
• Challenge howls
• Interrogation howls
• Group-style vocalizations
• Barks
• Whines
• Yips
• Pup distress and ki-yi sounds on versatile models

Advantages of Howlers

• Strong long-range projection
• Useful for locating coyotes
• Supports territorial and social calling strategies
• Can be used throughout several seasonal periods
• Provides real-time responses to coyote vocalizations
• May produce multiple canine sounds

Limitations of Howlers

• Require practice to control pitch and voice breaks
• Larger models take more room on a lanyard
• Aggressive vocalizations can be inappropriate in some situations
• Improper cadence may sound unnatural
• Maximum volume is not always desirable

Coaxers are small calls designed to produce quiet, high-pitched sounds associated with rodents, small birds, young prey, or subtle distress. They are often used to regain the attention of a nearby predator or encourage a hesitant animal to move the final distance.

How Coaxers Work

Many coaxers use a small closed reed, compact open reed, bulb, bellows, or pressure-operated sound chamber. Their size and tuning are designed for higher-frequency sounds rather than maximum volume.

Sounds Produced by Coaxers

• Mouse squeaks
• Vole or rodent distress
• Small bird distress
• Quiet rabbit whimpers
• Soft prey chirps
• Subtle finishing sounds

Advantages of Coaxers

• Excellent close-range volume control
• Small enough to carry anywhere
• Useful for hesitant predators
• Appropriate for tight cover
• Can add variety after louder calling
• Usually easy to operate

Limitations of Coaxers

• Limited long-range projection
• Can be difficult to hear in wind
• Not designed to replace a primary long-range call
• Hand movement may be visible at close range

When to Use a Coaxer

A coaxer is most useful when a predator is already nearby, visible, moving slowly, or showing uncertainty. It can also serve as a low-volume starting sound when calling tight cover where predators may be close before the stand begins.

A diaphragm call, sometimes called a mouth diaphragm, is placed inside the hunter’s mouth and uses one or more stretched latex reeds to produce sound. Air passes between the tongue and reeds, causing the latex to vibrate.

How Diaphragm Calls Work

The call rests against the roof of the mouth. The hunter applies tongue pressure to the reeds while directing air across them. Changes in tongue position, jaw position, airflow, mouth shape, and reed pressure alter the resulting sound.

Advantages of Diaphragm Calls

• Hands-free operation
• Minimal visible movement
• Broad pitch and sound control
• Useful for close-range calling
• Can produce prey distress and predator vocalizations
• Very compact and lightweight
• Allows calling while maintaining control of other equipment

Limitations of Diaphragm Calls

• Require practice and proper mouth placement
• May trigger a gag reflex for some users
• Latex reeds require careful storage
• Reeds can stretch, separate, or lose tension
• Sound consistency depends heavily on tongue control
• Cold and dry conditions may affect comfort

Sounds Produced by Diaphragm Calls

Depending on reed construction and caller skill, predator diaphragms may produce:

• Coyote howls
• Coyote whines and yips
• Pup distress
• Ki-yi sounds
• Rabbit distress
• Bird distress
• Fawn distress
• Fox distress
• Subtle close-range sounds

When Diaphragm Calls Are Most Useful

Diaphragm calls are especially useful when visible hand movement could expose the hunter. They are also valuable for night hunters who need their hands available for scanning equipment, tripods, firearms, or other controls.

Bite calls allow the hunter to change pitch by applying pressure with the teeth or lips to a flexible call body, reed housing, or sound-control section. The amount and location of pressure changes the reed tension, air channel, or shape of the call.

How Bite Calls Work

As the hunter bites or compresses the call, the sound-producing system changes. Increasing pressure commonly raises the pitch, although the exact effect depends on the call’s design.

The hunter combines bite pressure with:

• Airflow
• Breath rhythm
• Hand cupping
• Call angle
• Pressure changes throughout the calling phrase

Advantages of Bite Calls

• Easy pitch changes without an exposed tone board
• Expressive sound variation
• Can produce multiple pitches from one call
• Often easier to learn than direct open-reed control
• Useful for distress sounds with rising and falling pitch
• Compact and easy to carry

Limitations of Bite Calls

• Pressure control requires practice
• Excessive pressure may distort or stop the sound
• Flexible call bodies can wear over time
• Not every model offers the range of an open-reed call
• May become uncomfortable during extended calling

Who Should Choose a Bite Call?

Bite calls may appeal to hunters who want more pitch control than a traditional closed-reed call but prefer not to manipulate an exposed open reed. They can provide a practical middle ground between simplicity and versatility.

A practical way to choose a mouth call is to begin with the sound you want to produce. Some sound categories can be created with several call types, while others are associated more strongly with a specialized design.

Rabbit Distress

Rabbit distress can be produced with closed-reed calls, open-reed calls, bite calls, and some diaphragm calls. Closed reeds are often the easiest option, while open reeds provide more pitch variation.

Bird Distress

Bird distress is commonly produced with high-pitched closed-reed calls, narrow open reeds, diaphragms, and coaxers. These sounds are useful for coyotes, foxes, bobcats, and other predators.

Rodent Squeaks and Coaxing Sounds

Small coaxers, high-pitched closed reeds, compact open reeds, and some diaphragms are best suited for quiet rodent sounds.

Fawn Distress

Fawn distress generally requires a call capable of creating longer, deeper distress notes. Open-reed calls, specialized closed-reed calls, bite calls, and diaphragms may be used depending on the model.

Pup Distress

Pup distress can be produced with open-reed calls, howlers, diaphragm calls, and certain bite or closed-reed calls. Open reeds and diaphragms offer the greatest opportunity to vary pitch and emotional intensity.

Coyote Howls

Full-size howlers, open-reed howlers, and diaphragm calls are the most common choices for coyote vocalizations.

Wolf Howls

Wolf howlers are specialized for the lower pitch, resonance, and projection needed to imitate wolf vocalizations.

Raccoon Squalls

Raccoon squallers are specialized calls designed to produce loud, aggressive raccoon distress, fighting, or squalling sounds.

Predator species do not respond only to one call type. However, certain designs are especially useful for producing the sounds, volume, and calling styles commonly used for each animal.

Coyote Mouth Call Types

Coyote hunters often carry the widest mix of calls because coyotes respond to prey distress, pup distress, howls, whines, yips, barks, and other vocalizations.

Useful coyote call types include:

• Open-reed calls for versatile distress and vocalizations
• Closed-reed calls for consistent prey distress
• Howlers for long-range canine vocalizations
• Coaxers for close-range finishing sounds
• Diaphragm calls for hands-free vocalizations
• Bite calls for expressive pitch changes

Fox Mouth Call Types

Fox hunters commonly use closed-reed calls, compact open reeds, coaxers, and specialized fox calls. High-pitched rabbit, bird, rodent, and fox-distress sounds are especially useful.

Bobcat Mouth Call Types

Bobcat callers often use closed-reed bird or rabbit calls, high-pitched open reeds, coaxers, and diaphragms capable of producing consistent, repetitive distress sounds.

Mountain Lion Mouth Call Types

Mountain lion callers may use fawn-distress calls, open reeds, closed reeds, diaphragms, and specialized prey or lion vocalization calls. Lightweight call systems are particularly useful in remote terrain.

Raccoon Mouth Call Types

Raccoon hunters commonly rely on specialized squallers and aggressive distress calls. Some open-reed and diaphragm calls can add additional sounds, but dedicated squallers usually provide the desired volume and emotional intensity.

Hog Mouth Call Types

Hog calls may include specialized grunt calls, distress calls, diaphragms, and other pressure-operated designs. The best type depends on the behavior and sound being imitated.

Terrain affects how far a call needs to project, how much movement a hunter can safely make, and how close predators may be before the calling sequence begins.

Open Country

Open country often requires greater projection. Useful choices include:

• Loud open-reed calls
• Full-size howlers
• High-volume closed-reed calls
• Diaphragms capable of strong vocalizations

Hunters should still carry a coaxer or other quiet call for approaching animals.

Tight Cover

In thick vegetation, timber, brush, or broken terrain, predators may begin close to the stand. Compact closed reeds, coaxers, diaphragms, and controllable open reeds allow hunters to begin at lower volume.

Windy Conditions

Windy conditions favor calls with stable reeds, strong airflow capacity, and greater volume. Large open reeds, howlers, and high-volume closed reeds generally project better than small coaxers.

Cold Weather

Open-reed calls are easy to inspect and may be easier to clear when ice forms. Closed reeds should be protected from moisture, and diaphragms should be kept warm and stored properly between stands.

Night Hunting

Diaphragm calls reduce visible hand movement and keep both hands available. Closed-reed and open-reed calls remain effective but should be positioned where they can be reached without interfering with scanning or shooting equipment.

Best Types for Beginners

Most beginners should start with a closed-reed distress call because it produces a useful sound without requiring direct reed control.

A beginner call system may include:

• One closed-reed rabbit-distress call
• One simple rodent coaxer
• One beginner-friendly open-reed call

This combination provides an easy primary sound, a quiet finishing sound, and a platform for learning more advanced pitch control.

Best Types for Intermediate Callers

Intermediate callers may add:

• A versatile open-reed call
• A coyote howler
• A bite call
• Multiple closed reeds with different pitches
• A basic diaphragm call

Best Types for Advanced Callers

Advanced callers often choose call types based on specific sound goals rather than general ease of use. Their systems may include multiple open reeds, specialized howlers, several diaphragm reed designs, custom reed combinations, and species-specific calls.

Carrying several call types allows a hunter to change sound, volume, pitch, and calling style without depending on one reed or one design.

A Practical Four-Call System

Optional Additions

• A diaphragm call for hands-free operation
• A bite call for quick pitch changes
• A second closed-reed call with a different pitch
• A specialized raccoon squaller
• A wolf howler
• A species-specific distress call

Why Redundancy Matters

Mouth calls can freeze, become clogged, suffer reed damage, or become difficult to use in certain conditions. Carrying more than one type ensures that the hunt can continue if one call stops performing properly.

Avoid Carrying Unnecessary Calls

A large collection is not useful if the hunter cannot identify or reach the needed call quickly. Organize calls by purpose and carry only the models that match the species, sounds, and terrain expected for the hunt.

Mouth calls and electronic callers solve different problems. Understanding mouth-call types helps hunters decide which sounds should be created live and which are better delivered from a remotely placed electronic caller.

Advantages of Mouth Calls

• Immediate control over pitch, rhythm, and emotion
• No batteries or electronics required
• Lightweight and compact
• Natural variation between calling sequences
• Lower entry cost
• Fast deployment

Advantages of Electronic Calls

• Remote sound placement away from the hunter
• Recorded sounds from real animals
• Large sound libraries
• Consistent playback
• Reduced physical effort during long stands
• Ability to operate decoys and programmed sequences on compatible models

Using Both Systems Together

A hunter may use an electronic caller for remote prey distress while adding live howls, whines, pup distress, or coaxing sounds with a mouth call. This approach combines sound-source separation with immediate live control.

Each mouth-call type has different maintenance concerns. Proper care protects the reed, preserves sound quality, and reduces the chance of failure during a hunt.

Open-Reed Call Care

• Protect exposed reeds from bending or crushing
• Remove dirt, hair, and debris from the tone board
• Inspect reeds for cracks, warping, and uneven edges
• Allow the call to dry before long-term storage

Closed-Reed Call Care

• Limit moisture entering the reed assembly
• Allow internal reeds to dry after use
• Do not insert objects that may damage the reed
• Replace worn voice assemblies when appropriate

Howler Care

• Protect the reed and tone board
• Inspect barrels, bells, and connections
• Keep dirt and snow out of the resonance chamber
• Store large howlers where they cannot be crushed

Coaxer Care

• Keep small air passages clear
• Avoid crushing compact bulbs or flexible bodies
• Dry enclosed reeds after wet conditions
• Store where the small call cannot be lost

Diaphragm Call Care

• Rinse or clean according to manufacturer directions
• Allow reeds to dry
• Use reed separators when appropriate
• Store in a ventilated case
• Protect latex from excessive heat and sunlight
• Replace calls with damaged or stretched reeds

Bite Call Care

• Inspect flexible bodies for cracks or deformation
• Avoid biting harder than necessary
• Keep reed openings clear
• Allow the call to dry before storage

Choose a mouth-call type by matching the call’s strengths to the sounds, species, terrain, and level of control needed for your hunting style.

Choose a Closed-Reed Call When:

• You are new to mouth calling
• You want an easy, consistent distress sound
• You prefer minimal reed manipulation
• You need a dependable backup call

Choose an Open-Reed Call When:

• You want maximum pitch control
• You need several sounds from one call
• You hunt multiple predator species
• You are willing to practice reed placement

Choose a Howler When:

• Coyote vocalizations are a major part of your strategy
• You need long-range projection
• You want to locate or communicate with coyotes
• You need greater resonance than a small open-reed call provides

Choose a Coaxer When:

• You hunt tight cover
• You need close-range finishing sounds
• You want subtle rodent or bird sounds
• You already carry a louder primary call

Choose a Diaphragm Call When:

• You want hands-free calling
• You need minimal visible movement
• You want to produce vocalizations with your mouth cavity
• You are willing to practice tongue and airflow control

Choose a Bite Call When:

• You want pressure-controlled pitch changes
• You prefer not to manipulate an exposed reed directly
• You want more variation than a basic closed-reed call offers
• You need expressive rising and falling distress sounds

Final Selection Questions

Before choosing a call, ask:

1. Which predator species am I targeting?
2. Which sounds do I need to produce?
3. How much volume is required?
4. Will I be hunting open country or tight cover?
5. Do I need hands-free operation?
6. How much time am I willing to spend practicing?
7. Will this be a primary call or an electronic caller backup?
8. Do I need one specialized sound or broad versatility?

Predator mouth calls are divided into several primary types, and each design offers a different balance of simplicity, versatility, volume, movement control, and sound specialization.

• Closed-reed calls are easy to use and produce consistent distress sounds.
• Open-reed calls provide broad pitch control and the greatest sound versatility.
• Howlers produce loud, resonant coyote and canine vocalizations.
• Coaxers create quiet, high-pitched sounds for nearby or hesitant predators.
• Diaphragm calls allow hands-free calling with minimal visible movement.
• Bite calls change pitch through pressure and offer an accessible form of live sound control.

Beginners often benefit from starting with a closed-reed distress call and a small coaxer before adding an open reed, howler, or diaphragm. Experienced hunters commonly carry several call types so they can adapt to changing species, terrain, distance, weather, and predator behavior.

The best mouth call is not determined only by its category. Reed design, tone board shape, call body, airflow, material, pitch, volume, and the hunter’s technique all influence how a particular model performs.