Over the years, there has been a gratifying increase in observation activity. Nevertheless, there are still many kilometre squares in Switzerland where ornithologists rarely or never go. With "Terra incognita" we would like to encourage you to go birdwatching outside the ornithological hotspots from time to time. Even if you don't discover any rarities there, reports from such areas are very interesting for the Swiss Ornithological Institute - especially on complete observation lists.

This zoomable map (last updated 23/01/25) shows you exactly where the rarely visited kilometre squares are located (all kilometre squares with a maximum of 2 excursions in the last 5 years). We wish you exciting expeditions in unknown lands - and who knows, maybe you will manage a surprising observation?