Field Notes Journal

Seasonal Analysis and Species Classification

Swallow

Model Family : Seasonal presence

Summary

Swallow

Extended spring seasonal presence

Swallow is classified as extended spring seasonal presence. The fitted seasonal window runs from about April to October, with a spring peak around May. The season is very_broad, with a moderate active window, moderate post-peak decline, and strong off-season suppression.

Confidence
Medium
Peak
May
Season
April–October

Seasonal wheel

Seasonal wheel for Swallow Swallow Peak: May

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
4.16
Season end month
10.325
Forcing peak month
5.325
Season width months
6.165
Season midpoint month
7.243
Season start label
April
Season end label
October
Forcing peak label
May

Observed and Simulated Seasonal Patterns

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

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

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