Bat specialists document legally required compensatory measures after the natural landscape was transformed into an industrial area. For this purpose, all winged inmates of the nest boxes are determined, noted and counted. Sometimes the inhabitant is feathered and had flown out scolding, so that only its nesting material and food-remains are inspected.

The control of nesting boxes of bats requires a safe climbing technique.

Each nesting box is individually retrieved from the tree, opened and catalogued.

After opening the nesting box, the contents are analysed and noted.

Compensatory measures for large construction sites require scientific monitoring.

The contents of each nest box are checked regularly.

The two most important participants are out in nature a lot.

For photo reportages, different distances between the individual photos are important.

Different perspectives with depth make the pictures exciting.

Sometimes wasps hibernate in the nest boxes.

Wasps in the nesting box of bats are also documented.

A bat in one of the open nesting boxes

Backlight shot of one of the climbers on the ladder.

A shot of the team from a greater distance

A nesting box hanging from a tree.

A bat up close.

A bat after being taken out of the nest box for examination.

The bat in close-up.

One wing of a bat is unfolded for control.

The bat is released back into the nest box.

A bat sits on the glove finger.

To portray the bat together with the researchers requires a special perspective.

A bat flees back into its nest box.