Fuglsang (Haderslev-Fuglsang) was formerly part of the German Empire. In the German Empire, the place was called Vogelsang.
The place is now called Fuglsang (Haderslev-Fuglsang) and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Vogelsang | German Empire | Hadersleben | before the Versailles Treaty |
| Fuglsang | Denmark | Haderslev | after the Versailles Treaty |
| Fuglsang (Haderslev-Fuglsang) | Denmark | Sønderjylland | 1993 |