Field Notes Journal

Seasonal Analysis and Species Classification

Snowdrop

Model Family : Seasonal presence

Snowdrop (Galanthus nivalis) at Radley Lakes
Snowdrop (Galanthus nivalis) at Radley Lakes David Walker, Field Notes Journal ( CC BY 4.0 )
Snowdrop (Galanthus nivalis), Still Life
Snowdrop (Galanthus nivalis), Still Life David Walker, Field Notes Journal ( CC BY 4.0 )

Summary

Snowdrop

Narrow winter seasonal presence

Snowdrop is classified as narrow winter seasonal presence. The fitted seasonal window runs from about February to March, with a winter peak around February. The season is narrow, with a moderate active window, moderate post-peak decline, and strong off-season suppression.

Confidence
Medium
Peak
February
Season
February–March

Seasonal wheel

Seasonal wheel for Snowdrop Snowdrop Peak: February

Calendar strip

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Highlighted months indicate stronger modelled presence or detectability. A ring marks the fitted peak; a hollow mark indicates the trough where available.

Classification evidence

Season start month
1.52
Season end month
3.41
Forcing peak month
2.275
Season width months
1.89
Season midpoint month
2.465
Season start label
February
Season end label
March
Forcing peak label
February

Observed and Simulated Seasonal Patterns

Snowdrop Observed Presence, Abingdon
Snowdrop Observed Presence, Abingdon
Snowdrop Observed Totals, Abingdon
Snowdrop Observed Totals, Abingdon
Snowdrop Simulated Presence, Abingdon
Snowdrop Simulated Presence, Abingdon

Cite this dataset

You are welcome to reuse or reproduce this material under the terms of the Creative Commons CC BY 4.0 licence but please cite it using the reference below, include a link to the licence, and indicate if any changes were made.

Walker, David. Snowdrop. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.21. https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/snowdrop.html

Dataset FN-WL-SEASONAL Author David Walker Publisher Field Notes Journal Version 2026.05.21
Reference: Walker, David. Snowdrop. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.21.

BibTeX 
@dataset{fn_wl_seasonal,
  author = {Walker, David},
  title = {Snowdrop},
  year = {2026},
  publisher = {Field Notes Journal},
  version = {2026.05.21},
  url = {https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/snowdrop.html}
}