Multi-tier select-access aviary system

The NATURA 60 is a multi-tier system featuring doors which allow birds in and out of the system through defined locations in the system and at selected times, and are very popular for their excellent egg production figures and ease of management.

For certain certifiers this system can be used with the doors secured in the open position after the flock has reached a specified age.

The NATURA 60 & 70 system designs are very similar, and share many features, with the main difference being the NATURA 70 is wider with more usable space, a deeper nest, and all internal feed troughs, which allow for more birds per running foot of the system than the NATURA 60.


NATURA 60 is Big Dutchman’s innovative type of aviary for layers. The design concept is based on the idea to improve bird welfare of the flock, and also the cage-free environment. With quality space for each hen to act out their natural behaviors, such as:

  • PerchingNATURA-60
  • Dust bathing
  • Foraging
  • Nesting
  • Exploring and other social behaviors

The farm staff can easily supervise the flock from the 


inspection and litter aisles, and have easy access to each tier. The NATURA systems are engineered with the philosophy of, the easier the system is to manage, the better management will be performed.


After the hens are moved in, the system remains closed for a familiarization phase, providing less competition for the hen’s basic needs, resulting in less stress on the flock.


After the familiarization phase is over, the system can be fully opened, providing an additional environment for them to act out their natural behaviors of scratching, foraging and dust bathing.

Fresh drinking water on top and bottom tiers provide easy access to water for the entire flock
Fresh drinking water on top and bottom tiers provide easy access to water for the entire flock
Nests are positioned in the top tier where hens naturally go to seek out a secure place to lay their eggs
Advantages at a Glance:
  • Litter aisles are areas of the house that are free and open to the flock
  • Inspection aisles are used by the farm managers for system and flock inspection
  • The nests and longitudinal egg belts are located above the inspection aisles and are easily accessible
  • Both sides of the system are easily accessible for flock management
  • Interior stairways provide access for the hens to the different levels of the aviary
  • The hens access the litter aisles through large openings at the bottom level of the system

Every morning the doors open:

The NATURA 60 and NATURA 70 cage-free systems have doors which open every morning to allow your flock to have free access to the litter aisles. Each night the flock moves back into the system independently without any human involvement. The fact is hens want to feel secure and they feel secure inside the system, much like we want to be inside our houses at night.

Litter Properly Dried

Litter for a healthy and calm flock:

With the flock inside the system every night the litter is able to dry thoroughly, providing quality litter in which your flock can forage, dust bathe, and move around without the litter sticking to their feet. The better the quality of litter, the more the hens will use this area to act out their natural behaviors, improving the welfare of the entire flock.


Movement outside, and inside the system:

Movement is easy for the hens whether they’re inside or outside of this system. Outside of the system, they’re able to roam around, dust bathe, forage, interact with other hens, perch and do what they please. Within the system they can eat, drink, perch, move from the bottom to the top levels, and nest to lay their eggs.

Fresh Feed and Water

Fresh feed and water for the entire flock:

The entire flock has easy access to fresh feed and water whenever they want it. Our feed and water placement is intentional in order to promote bird movement within the system. Water is placed at the top level right outside the nests to provide the birds a drink after they lay their eggs, and another line of drinkers is placed in the lower tier of the system.

Feed is strategically placed inside the system to promote bird movement and open up quality space.

Encouraging bird movement is vital for a healthy flock. When birds move around air flow is increased, resulting in healthier birds, a calm flock, and drier litter.

Nest & Egg Handling
Operation of the tilting nest floor

(patent-no. EP 1 086 623 A2)

egg farm chicken house
The egg belt is located in the center to allow the eggs be laid directly in front of the belt . This design ensures the shortest possible roll-off distance for the eggs, minimizing the amount of cracked and checked eggs.
egg production tilt
Before the divided nest floor completely closes the nest, it is first raised in the center, increasing the inclination of the rear part of the nest floor and removing any eggs from the nest area.
egg farming
The nest floor is raised completely, allowing any dirt to drop off the nest insert as well as closing off the nest to prevent hens from entering and brooding inside.
System Inspection and Management

Management made easy:

The NATURA 60 is easy to manage, which means your staff will do a thorough job. The NATURA 60 has two separate aisles for your flock management; the litter aisle, and the inspection aisle. The litter aisle is used when the flock is inside the system during the night and early in the morning before the flock is let out.

Having the flock inside the system allows you to inspect the litter aisle without any contact with the hens, making system management from the litter aisle easy and fast. The inspection aisle is used throughout the day when the flock is out of the system. From this aisle you can inspect the system, check on the flock with easy access doors, and look for any mis-laid eggs and collect them from the integrated system egg tray.

Inside for the Night

Finding security within the system:

Just as we go inside every night, your flock wants to go inside to find security and comfort. Every night the entire flock heads back into the system without any human involvement. As the lights dim, the hens begin to hop up into the system through the access doors at the lowest level.To keep the flock safe, we only offer the ability for them to enter and exit the system from the lowest level.