Field Notes Journal

Seasonal Analysis and Species Classification

Gatekeeper Butterfly

Model Family : Seasonal presence

Summary

Gatekeeper Butterfly

Moderate summer seasonal presence

Gatekeeper Butterfly is classified as moderate summer seasonal presence. The fitted seasonal window runs from about June to September, with a summer peak around July. The season is moderate, with a moderate active window, strong post-peak decline, and strong off-season suppression.

Confidence
High
Fit score
0.037
Peak
July
Season
June–September

Seasonal wheel

Seasonal wheel for Gatekeeper Butterfly Gatekeeper Butterfly Peak: July

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
6.125
Season end month
8.56
Forcing peak month
7.475
Season width months
2.435
Season midpoint month
7.343
Season start label
June
Season end label
September
Forcing peak label
July

Observed and Simulated Seasonal Patterns

Gatekeeper Butterfly Observed Presence, Abingdon
Gatekeeper Butterfly Observed Presence, Abingdon
Gatekeeper Butterfly Observed Totals, Abingdon
Gatekeeper Butterfly Observed Totals, Abingdon
Gatekeeper Butterfly Simulated Presence, Abingdon
Gatekeeper 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. Gatekeeper Butterfly. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.26. https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/gatekeeper_butterfly.html

Dataset FN-WL-SEASONAL Author David Walker Publisher Field Notes Journal Version 2026.05.26
Reference: Walker, David. Gatekeeper Butterfly. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.26.

BibTeX 
@dataset{fn_wl_seasonal,
  author = {Walker, David},
  title = {Gatekeeper Butterfly},
  year = {2026},
  publisher = {Field Notes Journal},
  version = {2026.05.26},
  url = {https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/gatekeeper_butterfly.html}
}