By June the eggs of the European herring gulls have hatched, and at Opalsøen you can get very close to the nests and see how the small spotted hatchling gulls explore the world before they have learned to fly.
In the ponds tadpoles have become little toads that are ready to spend the rest of the year on land. The roe hinds now have a kid or two and last years offspring have become young roe deer and now have to fend for themselves. In the dusk the bats hunt insects. During June the young peregrine falcons are ready to take to the air and you can see them practising their flight technique.
In June and July the carnivorous plant round-leaved sundew flowers in the wetlands and by July the young gulls are flying and the young razorbills now have a waterproof plumage and can leave the nesting cliffs.
When the swallow-wort blossoms you can see the Black-and-Red-bug suck up it's fluids. These are poisonous to other animals but are seemingly the only food source for the Black-and-Red-bug.
The summer and early fall is when the insects are plenty, and that means lots of food for bats, toads and the young birds who all need to grow fat before the winter. In August the European adder gives birth. The snake have adapted to the cold northern climate by its eggs in the stomach until they hatch.