Heligoland trap
Appearance
English
[edit]Etymology
[edit]The first such trap was located at a bird observatory on the island of Heligoland, Germany.
Noun
[edit]Heligoland trap (plural Heligoland traps)
The first such trap was located at a bird observatory on the island of Heligoland, Germany.
Heligoland trap (plural Heligoland traps)