De Natuurkalender
Latest observations
- Golden rain · First flo.. 25-Apr-2025
- Common redstart · First.. 25-Apr-2025
- [vertalen: wittedovenetel] &mi.. 25-Apr-2025
- [vertalen: paardekastanjewitte.. 25-Apr-2025
- [vertalen: dotterbloemgewone] .. 25-Apr-2025
- Common broom · First fl.. 25-Apr-2025
- Comma butterfly · First.. 25-Apr-2025
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