CommercialToolry

All About One Egg Incubator: Specifications, Performance, and Common Uses

Types of One-Egg Incubators

A one-egg incubator is a specialized device designed to provide optimal hatching conditions for a single egg, making it ideal for hobbyists, educational purposes, or rare bird breeding. These compact incubators come in various types, each tailored to different user needs, from basic home setups to advanced developmental monitoring. Understanding the differences helps ensure proper embryo development and successful hatching.

Manual Egg Turner

Features hand-operated turning mechanisms with basic temperature and humidity controls.

Advantages
  • Affordable entry-level option
  • Simple to operate and maintain
  • Allows full user control over turning frequency
  • Ideal for learning incubation fundamentals
Limitations
  • Requires consistent user involvement (2–3 times daily turning)
  • Higher risk of human error
  • Limited automation and monitoring

Best for: Beginners, educational use, budget-conscious users, or rare egg hatching with close supervision

Automatic Egg Turner

Equipped with motorized systems that rotate eggs at set intervals without manual intervention.

Advantages
  • Consistent and precise turning (typically every 1–2 hours)
  • Reduces risk of embryo adhesion to shell
  • Saves time and effort
  • Improves hatch rates through reliable automation
Limitations
  • Higher initial cost
  • Potential mechanical failure points
  • Less user interaction may reduce learning opportunities

Best for: Busy hobbyists, consistent hatching goals, or those incubating multiple eggs over time

Foam Insulated Incubator

Built with rigid foam insulation for lightweight portability and improved thermal efficiency.

Advantages
  • Excellent heat retention
  • Energy efficient and low power consumption
  • Lightweight and easy to transport
  • Cost-effective manufacturing leads to lower prices
Limitations
  • Less durable than plastic or metal enclosures
  • Limited space for additional sensors or upgrades
  • May degrade over time with moisture exposure

Best for: Home use, temporary setups, or mobile incubation needs

Still Air Incubator

Relies on natural convection for air circulation without internal fans.

Advantages
  • Simple, reliable design with fewer moving parts
  • Quiet operation (no fan noise)
  • Lower cost and easier to repair
  • Less air disturbance, beneficial for sensitive embryos
Limitations
  • Uneven temperature distribution (hotter at top, cooler at bottom)
  • Requires precise thermometer placement
  • More frequent manual monitoring needed

Best for: Small-scale hatching, beginners, or environments with stable ambient temperatures

Forced Air Incubator

Uses internal fans to circulate heated air, ensuring uniform temperature and humidity.

Advantages
  • Even heat and moisture distribution
  • Higher hatch rate consistency
  • Better control in fluctuating room temperatures
  • Supports more accurate digital monitoring systems
Limitations
  • Slightly higher power usage
  • Fans can introduce noise
  • More complex system with potential failure points

Best for: Advanced hobbyists, variable climates, or achieving maximum hatch success

Hatchery-Grade Incubator

Industrial-style, high-precision units with advanced digital controls and automation.

Advantages
  • Computerized temperature, humidity, and turning control
  • Data logging and alerts for environmental changes
  • High reliability and repeatability
  • Often includes viewing windows and cooling options
Limitations
  • Significantly higher cost
  • Overkill for single-egg or casual use
  • Steeper learning curve for operation

Best for: Professional breeders, research, or rare species conservation

Type Automation Level Cost Hatch Rate Potential Ideal User
Manual Egg Turner Low $$ Medium Beginners, educators, hobbyists
Automatic Egg Turner High $$$ High Experienced hobbyists, frequent hatchers
Foam Insulated Low to Medium $ Medium Budget users, portable needs
Still Air Low $ Medium Simple setups, stable environments
Forced Air Medium to High $$$ High Advanced users, variable climates
Hatchery-Grade Very High $$$$ Very High Professionals, researchers

Expert Tip: For one-egg incubators, maintaining stable humidity is crucial during the final 3 days (lockdown phase). Consider using a small water chamber with a sponge to fine-tune moisture levels without over-saturating the environment.

Material & Durability of One-Egg Incubators: A Comprehensive Guide

The performance, lifespan, and reliability of a one-egg incubator are heavily influenced by the materials used in its construction. High-quality materials ensure stable temperature and humidity control, resistance to wear and environmental stress, and ease of maintenance—critical factors for successful hatching. Below is a detailed breakdown of the most common materials used in modern one-egg incubators and their impact on durability and functionality.

Plastic: Lightweight, Affordable, and Practical

Plastic is the most widely used material in consumer-grade one-egg incubators, especially in foam and compact tabletop models. Its lightweight nature makes it highly portable and user-friendly, ideal for home hatcheries, educational settings, or small-scale breeders.

High-density, food-grade plastics are resistant to moisture and microbial growth, making them easy to clean and sanitize between hatches—essential for preventing cross-contamination and disease transmission. UV-stabilized plastics maintain their structural integrity over time, resisting warping or degradation from prolonged exposure to heat and light.

While not as durable as metal, quality plastic enclosures offer excellent insulation and impact resistance when properly engineered. However, low-grade plastics may crack or deform under thermal stress, compromising incubation stability.

Glass: Superior Visibility with Care Requirements

Glass is commonly used in premium tabletop incubators where visual monitoring of embryo development is a priority. It provides a crystal-clear view of the egg without the need to open the chamber, minimizing disruptions to temperature and humidity levels.

Tempered or borosilicate glass is preferred for its improved thermal resistance and reduced risk of shattering. However, glass remains inherently fragile and can break if subjected to sudden temperature changes or physical impact—posing risks to both the developing embryo and the user.

Regular inspection for micro-cracks or seal degradation is essential. Even minor damage can compromise insulation and create safety hazards. While glass enhances aesthetics and monitoring capabilities, it requires careful handling and is generally not recommended for high-traffic or outdoor environments.

Metal: Industrial Strength and Thermal Efficiency

Metal components, particularly stainless steel and aluminum, are typically found in commercial or advanced one-egg incubators designed for precision and longevity. These materials offer exceptional durability, corrosion resistance, and structural stability.

Stainless steel is non-porous, easy to sterilize, and resistant to rust and chemical damage—making it ideal for environments where hygiene is critical. Aluminum is lighter and provides excellent thermal conductivity, helping maintain even heat distribution throughout the chamber.

While metal enhances durability and performance, it comes at a higher cost. Stainless steel models are more expensive to manufacture and maintain, and their weight may reduce portability. Additionally, metal conducts heat more readily than plastic or foam, so proper insulation is crucial to prevent energy loss and external surface overheating.

Insulation: The Key to Climate Stability

Effective insulation is vital for maintaining consistent internal conditions. Most foam-based one-egg incubators use expanded polystyrene (EPS) or polyurethane foam layers within the walls to minimize heat transfer and reduce energy consumption.

High-quality insulation ensures minimal temperature fluctuations—even in environments with variable room temperatures—supporting optimal embryo development. It also reduces the workload on heating elements, extending their lifespan.

Poor or degraded insulation leads to inconsistent humidity, increased power usage, and higher risk of hatch failure. Over time, low-density foams may compress or absorb moisture, reducing effectiveness. Regular inspection for dampness or physical damage is recommended, especially in humid climates.

Electrical Components: Precision and Longevity

The reliability of a one-egg incubator depends significantly on the quality of its electrical components, including heating elements, fans, thermostats, and digital humidity controllers. These systems regulate the core environmental conditions necessary for successful hatching.

Inferior components—such as basic thermostats or underpowered fans—can result in hot spots, poor air circulation, or inaccurate temperature readings, all of which jeopardize embryo viability. In contrast, high-quality components offer precise, responsive control and often include fail-safes or digital displays for real-time monitoring.

Look for incubators with sealed heating elements, brushless fans, and PID (Proportional-Integral-Derivative) controllers for maximum accuracy and durability. Regular cleaning and dust removal help prevent electrical failures and prolong component life.

Material/Component Durability Rating Best For Key Considerations
High-Density Plastic Medium-High Home use, education, portability Ensure UV and heat resistance; avoid thin or brittle plastics
Glass (Tempered/Borosilicate) Medium Observation, precision hatching Fragile; requires careful handling and regular inspection
Stainless Steel High Commercial, sterile environments Expensive; heavier; excellent for hygiene
Aluminum High Balanced performance and weight Good thermal conductivity; corrosion-resistant
Polyurethane Foam Insulation High Energy efficiency, climate stability Avoid moisture exposure; inspect for compression
Premium Electrical Components High Precision control, long-term use Look for PID controllers, sealed elements, and digital feedback

Important: Always choose a one-egg incubator constructed with high-quality, purpose-built materials. Compromising on material quality may lead to inconsistent hatching conditions, shorter product lifespan, and increased risk of equipment failure. Regular cleaning, inspection, and proper storage will maximize durability and ensure reliable performance across multiple hatching cycles.

Commercial Use Cases of One-Egg Incubators: Maximizing Poultry Production Across Industries

One-egg incubators have evolved from simple hatching tools into essential equipment across a wide range of commercial applications. These precision-controlled devices simulate ideal embryonic development conditions—maintaining optimal temperature, humidity, and ventilation—enabling consistent, high-success-rate hatching. Their scalability, reliability, and technological advancements make them vital for operations ranging from small family farms to advanced research laboratories.

Family Farms

Small-scale and family-run farms utilize one-egg incubators to establish self-sustaining poultry cycles, reducing dependency on external hatcheries and commercial suppliers. By controlling the entire hatching process, farmers ensure access to healthy, disease-free chicks that are better adapted to local climates and farming practices.

  • Enables year-round chick production regardless of seasonal breeding cycles
  • Supports genetic diversity by allowing hatching of heritage or rare breeds not commonly available commercially
  • Facilitates selective breeding programs to improve flock resilience and productivity
  • Reduces input costs over time by eliminating recurring chick purchases

Key benefit: Greater autonomy in flock management and improved long-term sustainability

Commercial Poultry Operations

Large-scale poultry farms and industrial hatcheries rely heavily on automated, forced-air incubators capable of managing thousands of eggs simultaneously. These systems are engineered for maximum throughput, consistency, and biosecurity—critical for meeting the demands of global meat and egg markets.

  • High-capacity incubators support batch hatching of broiler chicks for meat production
  • Programmable settings ensure uniform development across diverse egg types (chicken, turkey, etc.)
  • Integration with climate control and monitoring systems minimizes human error and loss rates
  • Scalable models allow gradual expansion as operations grow

Efficiency gain: Up to 90% hatch success rate with modern commercial units, significantly improving ROI

Specialty Farms & Game Bird Operations

Farms specializing in quail, ducks, geese, pheasants, and other non-commercial poultry species require incubators tailored to the unique needs of different egg sizes, shell thicknesses, and developmental timelines. One-egg incubators with adjustable settings provide the flexibility needed for successful hatching of these sensitive species.

  • Duck and goose eggs require higher humidity levels than chicken eggs
  • Quail eggs have shorter incubation periods (16–18 days) and need precise temperature control
  • Game birds often benefit from manual turning or specialized rotation patterns
  • Dedicated chambers prevent cross-contamination between species

Specialized advantage: Enables niche market entry with premium-priced game birds or exotic poultry

Educational Institutions

Schools, agricultural colleges, and universities integrate one-egg incubators into science and agriculture curricula, offering students hands-on experience in embryology, animal development, and sustainable farming practices. These real-world learning tools bridge theoretical knowledge with practical application.

  • Students observe embryonic development stages through candling and data tracking
  • Teaches responsibility, life cycles, and biological systems in an engaging way
  • Supports STEM education in biology, genetics, and environmental science
  • Prepares future farmers, veterinarians, and biologists with foundational skills

Educational impact: Enhances student engagement and retention in agricultural sciences

Research Facilities

Veterinary schools, biotechnology labs, and biological research centers use precision incubators to study avian embryogenesis, genetic expression, disease transmission, and vaccine development. Controlled environments allow scientists to manipulate variables and observe outcomes under reproducible conditions.

  • Used in studies on congenital disorders and developmental abnormalities
  • Supports gene-editing experiments and transgenic poultry research
  • Facilitates testing of antiviral agents and embryonic vaccination techniques
  • Enables long-term studies on epigenetics and environmental effects on development

Scientific value: Critical tool for advancing poultry health, food security, and biomedical research

Hobby Farms & Backyard Producers

Enthusiasts and small-scale producers use compact one-egg incubators to hatch chicks for personal consumption, local sales, or breed preservation. These user-friendly units are perfect for beginners and experienced hobbyists alike, offering affordability and ease of use without sacrificing performance.

  • Ideal for urban homesteaders with limited space
  • Allows experimentation with heirloom or decorative breeds (e.g., Silkies, Polish)
  • Promotes food sovereignty and sustainable living practices
  • Can generate supplemental income through egg or chick sales at farmers' markets

Lifestyle benefit: Combines passion for animals with practical self-reliance

Pro Insight: When selecting a one-egg incubator for commercial use, prioritize models with digital controls, automatic egg turners, humidity regulators, and alarm systems. For larger operations, consider modular units that can be linked or expanded. Always verify compliance with agricultural safety standards and warranty coverage to protect your investment.

Application Sector Primary Objective Key Incubator Features Needed Typical Scale
Family Farms Sustainable flock renewal Reliable temperature control, medium capacity (20–100 eggs) 10–50 chicks per cycle
Commercial Poultry Mass production of broilers/layers Forced-air circulation, automation, large capacity (1,000+ eggs) 500–10,000+ chicks per cycle
Game Bird Operations Species-specific hatching Adjustable humidity, multi-species programming 25–200 birds per cycle
Educational Use Hands-on learning Transparency (viewing windows), safety features, ease of use 6–24 eggs per classroom
Research Labs Precision experimentation Ultra-stable environment, data logging, sterile design 10–100 experimental eggs
Hobby Farms Personal or local production Compact size, affordability, simplicity 6–30 eggs per batch

Additional Considerations for Commercial Success

  • Regulatory Compliance: Ensure incubators meet health and safety standards for commercial livestock operations
  • Maintenance & Calibration: Regular cleaning and sensor calibration are essential for consistent performance
  • Energy Efficiency: Look for energy-star-rated models to reduce long-term operating costs
  • Tech Integration: Wi-Fi-enabled incubators allow remote monitoring via smartphones or tablets
  • After-Sales Support: Choose brands with responsive customer service and accessible replacement parts
  • Sustainability: Incubators reduce the carbon footprint associated with transporting live chicks over long distances

How to Choose the Right Egg Incubator: A Comprehensive Buyer’s Guide

Selecting the ideal egg incubator is a crucial decision for hobbyists, small-scale farmers, and commercial poultry producers alike. The right incubator ensures optimal hatching conditions, maximizes hatch rates, and supports healthy chick development. With various models and technologies available, making an informed choice involves evaluating several key factors. This guide explores essential considerations—from budget and capacity to automation and mobility—helping you select the perfect incubator for your specific needs and scale of operation.

Important Note: While "one egg incubator" refers to minimal-capacity units, most practical incubators support multiple eggs. True single-egg models are rare and typically used for specialized breeding or educational purposes. This guide covers incubators suitable for personal, small-scale, and commercial use.

Cost and Budget Considerations

When evaluating incubators, it's essential to balance upfront cost with long-term value. Entry-level models may start under $50, while advanced digital incubators with automatic controls can exceed $500. Begin by defining your budget range and researching reputable brands such as Brinsea, GQF, and VIVOSUN. Compare features across price points to avoid overspending on unnecessary technology or underinvesting in critical functions like temperature stability.

Consider total ownership costs, including electricity usage over a typical 21-day incubation cycle, potential replacement parts (like heating elements or fans), and accessories such as hygrometers or backup power systems. Investing in a slightly more expensive, energy-efficient model often pays off through lower operating costs and higher hatch success rates.

Expert Tip: Look for incubators with energy-saving features like insulated chambers, low-wattage heaters, and efficient fan motors. These reduce long-term electricity bills and maintain stable conditions during power fluctuations.

Maintenance & Repair Costs

Maintenance requirements vary significantly between models. Basic still-air incubators have fewer mechanical parts and thus lower repair risks, while forced-air and automatic-turning models include fans, motors, and electronic controls that may require servicing over time. Opt for designs with easily accessible components and user-replaceable parts to minimize downtime and technician fees.

Inexperienced users should prioritize models known for reliability and ease of maintenance. Check warranty terms—many quality manufacturers offer 1–3 year coverage on electronics and structural components. Additionally, evaluate after-sales support, including availability of customer service, spare parts, and online troubleshooting resources. A strong support network can save time and money when issues arise.

Turner Type: Manual vs. Automatic

Egg turning is vital for proper embryo development, preventing the yolk from sticking to the shell membrane. Incubators come with two primary turning mechanisms:

  • Manual Turners: Require the user to rotate eggs 3–5 times daily. Ideal for small batches (5–20 eggs) and those who prefer hands-on involvement. These models are generally more affordable and mechanically simple.
  • Automatic Turners: Use motorized systems to rotate eggs on a set schedule, typically every 2–4 hours. Essential for larger operations or users who cannot commit to daily turning. These reduce human error and ensure consistent results.

Pay attention to tray design—some use flat trays that tilt, while others employ roller systems that gently roll eggs. Roller trays are often preferred for delicate or larger eggs (like duck or goose), while flat trays work well for chicken eggs. Ensure the turning mechanism allows for easy removal during the lockdown phase (last 3 days before hatching), when eggs must remain undisturbed.

Hatch Capacity: Matching Size to Your Needs

Incubator capacity should align with your production goals:

  • Mini or Single-Egg Units: Rare but available for specialized breeding, education, or rare bird species. Often used in classrooms or research settings.
  • Small-Scale (5–50 eggs): Perfect for backyard enthusiasts or hobbyists raising a few chickens. These compact models fit easily on countertops or shelves.
  • Medium (50–200 eggs): Suitable for small farms or breeders producing chicks regularly. Often feature digital controls and automatic turning.
  • Commercial (200+ eggs): Designed for hatcheries with high-volume output. These include advanced climate control, multiple chambers, and data logging capabilities.

Remember that overcrowding reduces airflow and increases contamination risk. Always choose a capacity slightly above your typical batch size to allow for optimal conditions and future expansion.

Incubator Type: Still-Air, Forced-Air, and Water-Based Systems

The type of incubator affects temperature distribution, humidity control, and ease of use:

  • Still-Air Incubators: Rely on natural convection for heat distribution. Simple, inexpensive, and ideal for beginners. However, they require precise egg placement and are more sensitive to ambient temperature changes. Best for small batches.
  • Forced-Air Incubators: Use internal fans to circulate warm air evenly throughout the chamber. Provide superior temperature consistency, making them suitable for longer incubation periods and diverse egg types. Recommended for serious hobbyists and commercial use.
  • Water-Based (or Humidity-Controlled) Incubators: Incorporate water trays or misting systems to maintain high humidity levels essential for successful hatching. Some advanced models use digital humidifiers with sensors. These are particularly beneficial in dry climates or for waterfowl eggs, which require higher moisture levels.

Many modern incubators combine forced-air circulation with automated humidity control for optimal results.

Mobility and Space Efficiency

If you plan to move your incubator frequently or have limited space, mobility becomes a key factor. Lightweight models made from durable plastic are easier to transport but should still provide adequate insulation. Look for units weighing under 15 lbs for easy handling.

Some incubators come equipped with built-in wheels or casters, allowing smooth movement between rooms—especially useful for seasonal use or shared workspaces. Ensure that mobility features don’t compromise stability; wobbling can disrupt developing embryos. Foldable handles or compact designs enhance portability without sacrificing performance.

Measure your intended space before purchasing. Countertop models should allow at least 6 inches of clearance around all sides for ventilation. Avoid placing incubators near drafts, direct sunlight, or heat sources that could interfere with internal temperature regulation.

Feature Beginner-Friendly Options Advanced/Commercial Options Key Benefits
Capacity 5–20 eggs 50–1000+ eggs Scalable to operation size
Turning Mechanism Manual or basic automatic Programmable automatic turners Consistent embryo development
Temperature Control Analog thermostat Digital PID controller Precise, stable environment
Humidity System Manual water trays Automatic misting/sensors Optimal moisture levels
Mobility Lightweight, portable Wheeled base, durable frame Easy relocation and setup

Pro Tip: Before finalizing your purchase, read customer reviews focusing on real-world hatch rates, durability, and manufacturer responsiveness. Join poultry forums or Facebook groups to get firsthand recommendations from experienced users.

Final Selection Checklist

  • ✔ Define your budget and include long-term operating costs
  • ✔ Choose a capacity that matches your current and future needs
  • ✔ Decide between manual and automatic turning based on time commitment
  • ✔ Select the appropriate incubator type (still-air vs. forced-air)
  • ✔ Prioritize models with reliable warranties and accessible customer support
  • ✔ Consider mobility features if space is limited or relocation is needed
  • ✔ Verify ease of cleaning and maintenance access

Choosing the right egg incubator doesn’t have to be overwhelming. By carefully assessing your goals, budget, and technical comfort level, you can find a model that delivers consistent, healthy hatchlings for years to come. Whether you're hatching your first clutch or scaling up production, investing in the right equipment lays the foundation for success in poultry raising.

Frequently Asked Questions About One-Egg Incubators

Q. Do one egg incubators have special requirements for electricity?

Yes, one-egg incubators are sensitive to power fluctuations, which can disrupt temperature and humidity control—critical factors for successful hatching. In regions with unstable electrical supply, it is highly recommended to use a backup power source such as an inverter or generator to maintain uninterrupted operation.

Additionally, these devices are designed to operate according to local voltage (e.g., 110V–120V in North America or 220V–240V in Europe) and frequency standards (50Hz or 60Hz). Using incompatible adapters or converters without proper regulation can damage the unit or impair performance.

  • Voltage Compatibility: Always verify that the incubator matches your region’s electrical standard before purchase.
  • Power Stabilization: Consider using a surge protector or voltage stabilizer to protect against spikes and drops.
  • Adapter Use: If using a plug adapter, ensure it does not alter voltage or frequency and supports the required wattage.

Proper electrical setup ensures consistent performance and increases the likelihood of successful hatching outcomes.

Q. How can one egg incubators ensure the quality of hatching eggs?

While the incubator provides the controlled environment necessary for development, the quality of hatching results depends significantly on pre-incubation practices and egg selection. Buyers must take proactive steps to maximize hatch rates and chick health.

  • Sanitation is Key: Thoroughly clean and disinfect the egg tray, turning mechanism, and interior surfaces between batches to eliminate bacteria, mold, and organic residue from previous uses. Use mild, non-toxic cleaners safe for food-contact surfaces.
  • Fresh, Fertilized Eggs: Source eggs from healthy, well-mated birds. Locally sourced fertilized eggs tend to perform better due to reduced transit stress and freshness.
  • Commercial Poultry Eggs: For convenience, buyers may use commercially available fertilized eggs from reputable hatcheries, which often come pre-verified for fertility and breed consistency.
  • Egg Handling: Avoid washing eggs before incubation, as this removes the natural protective bloom. Store eggs pointed-end down and turn them daily until placed in the incubator.

By combining proper hygiene with high-quality egg sourcing, users can significantly improve hatch success even with single-egg setups.

Q. Are one egg incubators weatherproof?

Not all one-egg incubators are weatherproof—this feature is specifically included only in models designed for outdoor or semi-outdoor use. However, many outdoor-rated units do come with robust weather-resistant construction to withstand environmental challenges.

Weatherproofing typically involves:

  • Sealed seams and gaskets to prevent moisture ingress.
  • Water-resistant enclosures and trays that resist condensation buildup.
  • Reinforced front covers or doors with locking mechanisms to protect against wind and rain.

The level of protection can be assessed by the IP (Ingress Protection) rating:

IP Rating Protection Level Suitable For
IP65 Dust-tight & protected against low-pressure water jets Sheltered outdoor areas
IP66 Dust-tight & resistant to powerful water jets Exposed patios, coops, or rainy climates
IP67 Dust-tight & can withstand temporary immersion in water (up to 1m for 30 minutes) High-moisture environments or accidental spills

If planning to place the incubator outside, always check the manufacturer's specifications for weather resistance and consider additional shelter like a covered enclosure.

Q. Can buyers place the one egg incubator in any location indoors?

No, the placement of a one-egg incubator indoors significantly affects its performance. To maintain stable temperature and humidity levels, users should avoid locations prone to environmental fluctuations.

Areas to avoid include:

  • Direct sunlight: Can cause overheating and uneven temperature distribution inside the chamber.
  • Windows and exterior doors: Drafts and temperature swings from opening/closing can interfere with climate control.
  • High-traffic zones: Vibrations from movement or noise may stress developing embryos.
  • Kitchens or bathrooms: High humidity or steam can distort internal sensor readings.

Ideal placement includes:

  • A quiet, climate-stable room such as a spare bedroom or office.
  • A flat, vibration-free surface away from vents, radiators, or air conditioners.
  • An area with some privacy to minimize disturbances during critical incubation stages.

Proper positioning supports consistent development and makes monitoring easier, increasing the chances of a successful hatch.