¶ Natrix helvetica
¶ Ringslang (Barred grass snake)
Reptiles & Amphibians
¶ Why this species, in the context of the Amsterdamse Bos
A Bos conservation success. Per amsterdamsebos.nl: "Nergens in en rond Amsterdam worden zoveel eieren gevonden als juist hier" — roughly 1,000 grass-snake eggs hatch each year in Bos broeihopen (compost-heap incubators) maintained by the Bos management. 190 confirmed observations, median GPS accuracy 10 m. Despite Wet natuurbescherming protection, the Bos's records come back at full precision.
¶ Facts from the graph
| Total observations in the Bos | 190 |
| First recorded | 2002-06-20 |
| Last recorded | 2026-05-09 |
| Max rarity tier | 2 — uncommon |
¶ Top sub-locations within the Bos
- Amsterdamse Bos - Radarterrein — 38 observations
- Amstelveen - Amstelveense Poel — 26 observations
- Amsterdamse Bos - Schotse Hooglanders / Camping — 23 observations
- Amsterdamse Bos — 20 observations
- Amsterdamse Bos - Heuvel / Manege — 14 observations
¶ Explore
- View this species on the Bos map → (all observations, plotted geographically)
- Species page on waarneming.nl
- Bos-filtered observation list on waarneming.nl
- One example observation
Data derived from 136,107 waarneming.nl observations at location 5013 (Amsterdamse Bos), scraped May 2026. Bos-context text: manually composed from the Bosplan 2020–2030, amsterdamsebos.nl, and the existing Het Onzichtbare Zichtbaar dossiers.