| |||
Birkhuhn n (Lyrurus tetrix, Tetrao tetrix tetrix) | |||
Birkhahn m (Lyrurus tetrix, Tetrao tetrix) | |||
Birkhuhn n. (Tetrao tetrix (=Lyrurus tetrix)) | |||
Birkhuhn n (Tetrao tetrix) |
korhoen: 2 phrases in 2 subjects |
Natural resourses and wildlife conservation | 1 |
Zoology | 1 |