I gave it a shot! Sorry about any grammatical errors, I ran it through Google Translate and corrected what errors I could find as to make it at least understandable. I hope it is!
Minimum cage size requirement chart (a slightly easier version than the actual one):

1 § Pet birds of species that does not live solitary in the wild should be kept in pairs or groups in a shared storage space. Space measurements and number of birds should be adjusted so that the birds does not hurt or stress eachother.
If a bird is abnormally aggressive towards other birds, so that there is an obvious risk it hurts them, it may, regardless of the first paragraph be kept alone in a separate space. It must still be able to communicate visually and verbally with one or more individuals of the same species or genus.
The first paragraph does not apply if the birds’ need to be with other birds is instead satisfied through contact with humans.
Guidelines to Chapter 6. 1 §
If it is necessary in order to avoid unnecessary stress, when birds are kept in separate spaces, one can define the cages so the birds are able to choose whether they want to expose themselves to each other or not.
If the bird's need for social contact is to be covered by human contact, the social interaction with humans should be of a scale that ensures that no abnormal behaviors caused by the lack of social contact occurs.
2 § Limitation of flight may only occur if
1. the bird is over a year old,
2. the bird can not be trained to use the flight harness,
3. limitation is achieved by trimming of the wings, and
4. wing trimming only occurs once a year.
Wing trimming should be done so that the bird, even after the restriction, has a good stability and sufficient lift to eliminate the risk of being injured while attempting to fly.
If there are medical reasons, a bird's flying ability, regardless of the first
paragraph, can be limited more than once a year.
3 § A companion bird may not be tethered via a leash connected to leg or leg band. A leash that is handled by a human may be temporarily attached to the bird via a flight harness or equivalent.
§ 4 An unweaned baby bird should be kept with at least one feeding adult bird. Hand feeding may only occur if the adults do not feed the chicks or if the adult birds' behavior is harmful to the chicks.
Guidelines to Chapter 6. 4 §
Chicks of the following genera and species should be kept after hatching
together with at least one feeding adult bird as follows:
Budgerigar – at least 6 weeks
Cockatiel – at least 7 weeks
Lovebirds (Agapornis spp.) - at least 6 weeks
Canary - at least 30 days
Zebra finches – at least 30 days
Society finch - at least 30 days
Java sparrow - at least 30 days.
Young males that starts showing their adult plumage should not be kept with the father bird.
5 § Breeding pet birds should not be allowed to produce as many clutches in a row that it affect their health adversely.
Guidelines to Chapter 6. 5 §
Breeding pet birds should not be allowed to have more than two clutches in a row during breeding season. If one clutch was unusually small, the birds can be given the opportunity to have three clutches during the period.
§ 6 Ground living pet birds should not be kept on wire floors.
7 § Pet birds should be housed in spaces of at least the measurements set out in 1:1 (The cage size chart above). During bird shows/expos, pet birds may temporarily, for a period of maximum one day, be housed in smaller cages.
8 § The bottom of cages for ground living pet birds should be covered with bedding/litter.
9 § Pet birds should be kept in an enriched environment that stimulates them to
perform their natural behaviors and prevents the development of behavioral disorders.
Guidelines to Chapter 6. 9 §
The environment should include materials adapted to the species requirements, such as natural materials and devices to climb, swing and jump on, materials or objects to chew on and pick apart, and bottom substrate, set-up and feeding devices that stimulates foraging behavior. An enriched environment is maintained through replacing enrichment objects and methods at frequent intervals so that the bird does not lose interest and stop using the objects. Pet birds should have daily access to spaces where they can perform natural movement, such as flying freely.
10 § Pet birds of species that are not only ground dwelling should have at least two clean perches.
If several birds are kept together, there should be perches to the extent that all birds can perch at the same time without competition or aggression occuring.
Guidelines to Chapter 6. 10 §
If several pet birds are kept together, the total length of all perches together should be larger than twice the measure of the total birds’ chest width.
§ 11 Perches should be of a thickness adapted to the bird's foot size and be made of a material which, without being abrasive, gives the bird a sufficient foothold.
Guidelines to Chapter 6. 11 §
At least one perch should be so thick that the bird can not get its toes fully around it.
Perches should be of different diameters or shapes so that the bird can train its feet with different grips. Perches should be made of wood or other material with similar qualities.
§ 12 Perches should be positioned so that the cage volume can be utilized to the maximum possible flight distance, and so the droppings does not contaminate food, water or other birds, and so that the birds' tail feathers does not but occasionally come into contact with food, water or cage bottoms.
Guidelines to Chapter 6. 12 §
In a rectangular cage at least two perches should be placed edgeways in opposite ends of the cage. Interior should not be placed between perches in such a way that birds' flight opportunities are obstructed.
13 § Ground dwelling pet birds should have a set-up where they can find shelter on the bottom of the cage.
14 § Sand Bathing pet birds should have clean and fine sand for sand baths.
15 § Bathing pet birds should have clean water. Bird bath design and depth should be adapted to the birds' size and species. A bird bath must be shallow enough for the bird to reach the bottom.
16 § Pet birds may be kept at lower temperatures than the species under normal weather conditions are exposed to in the wild, provided that this does not affect their health, and that they are allowed to get used gradually to the lower temperature.
Pet birds should have access to a room where the temperature is above 0° C.
17 § Breeding pet birds and pet birds that are kept in a new environment should have a dim nightlight.
18 § If several pet birds are kept together, every, without being hindered by eachother, should be able to reach the food.
Pet birds with a high metabolism or special needs should have free access to
food.
Ornamental poultry held outdoors or in a building where the temperature is below 0° C should be given lukewarm drinking water at least twice a day.
Guidelines to Chapter 6. 18 §
If several pet birds are kept together, food should be available so that
at least one third of the birds are able to eat at the same time. Empty husks
in the feed container should be removed often so that food is always accessible for the birds.
Small pet birds, of a length less than 15 cm, as well as pet birds that mainly eat nectar, fruits and insects should have free access to food.
Breeding pet birds should have free access to calcium supplements. Small pet birds and seed-eating pet birds that are not peeling the seeds should have free access to digestive gravel/grit. Small birds, such as canaries and similar species, should be given digestive gravel/grit with a grain size of 0.8 to 1.2 mm. Larger birds may also be given digestive gravel/grit with a grain size of 1.2 to 2.0 mm.