(c) Ad Konings, some rights reserved (CC BY-NC), uploaded by Ad Konings CC BY-NC · iNaturalist - Observations
- 11
- Peak
- mid April
- Years Recorded
- 7
- First
- 2007-09-26
- Most Recent
- 2025-09-21
Verified observations per week, all years combined. Weeks with no records are left blank.
