He spent most of his time collecting bird specimens in the countryside for stuffing and drawing.

The Lower gallery, currently closed, contains bird specimens from around the world.

He had an interest in natural history from an early age, and collected bird specimens.

He made a collection of some 500 bird specimens.

His collection of Siberian bird specimens had then grown to some 4500.

Given a gun at about 12 years of age, he began collecting bird specimens.

The Berlin Museum has a total of 13,760 bird specimens.

He was known to collect bird specimens from his neighborhood and surrounding area.

Other possible uses for bird specimens not known today may arise in the future.

He gave his entire collection of bird specimens to the museum in 1920.