Field Notes Journal

Seasonal Analysis and Species Classification

Speckled Wood Butterfly

Model Family : Seasonal presence

Summary

Speckled Wood Butterfly

Extended summer seasonal presence

Speckled Wood Butterfly is classified as extended summer seasonal presence. The fitted seasonal window runs from about April to October, with a summer peak around August. The season is very_broad, with a sharp active window, strong post-peak decline, and moderate off-season suppression.

Confidence
Medium
Peak
August
Season
April–October

Seasonal wheel

Seasonal wheel for Speckled Wood Butterfly Speckled Wood Butterfly Peak: August

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
3.595
Season end month
10.08
Forcing peak month
8.435
Season width months
6.485
Season midpoint month
6.838
Season start label
April
Season end label
October
Forcing peak label
August

Observed and Simulated Seasonal Patterns

Speckled Wood Butterfly Observed Presence, Abingdon
Speckled Wood Butterfly Observed Presence, Abingdon
Speckled Wood Butterfly Observed Totals, Abingdon
Speckled Wood Butterfly Observed Totals, Abingdon
Speckled Wood Butterfly Simulated Presence, Abingdon
Speckled Wood Butterfly 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. Speckled Wood Butterfly. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.21. https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/speckled_wood_butterfly.html

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

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