| Level 1 | Thriving Requirement 1: Coarse Sand terrain | | |
| Level 2 | Thriving Requirement 2: at least 15 objects or plants with the Reed tag; Eurasian Bittern Fact Sheet | | |
| Level 3 | Release groups and release to the wild | | |
| Level 4 | Thriving Requirement 3: Food Grade 2; Fertility Level 1 (+15% fertility) | Before this level: an Observation Network (Observation Platform) in Poland Reserve and this species released in Poland Reserve | |
| Level 5 | Thriving Requirement 4: at least 50% native plants | | |
| Level 6 | Thriving Requirement 5: Sprinkler, at least 2; Fertility Level 2 (+30% fertility) | | |
