De Natuurkalender
Latest observations
- Mallard · First young s.. 19-Apr-2024
- Common nightingale · Fi.. 18-Apr-2024
- Golden rain · First flo.. 18-Apr-2024
- Willow warbler · First .. 18-Apr-2024
- Potato · Sowing 18-Apr-2024
- Eurasian reed warbler ·.. 18-Apr-2024
- Mallard · First young s.. 17-Apr-2024
Updates
- Autumn colouring in the Netherlands is late; European autumn campaign with students 11-Oct-2021
- The 2017 growing season of a Dutch birch captured by the GrowApp 10-Dec-2017
- Capture the green explosion in your surroundings with the GrowApp; now also available on iOS 01-Apr-2017
- GrowApp: make an animation of climate change in your backyard 20-Mar-2017
Extra attention
Hazel
Record your first flowering of hazel: Anonymus or With account
Click here for the species of which we would like you to record your sightings.
Observations per week
Map
Jan
Dec
First flower