Field Notes Journal

Seasonal Analysis and Species Classification

Pheasant

Model Family : Resident detectability

Summary

Pheasant

Resident with summer detectability collapse

Pheasant is classified as resident with summer detectability collapse. The fitted resident detectability target peaks around April and reaches its lowest point around August. The model indicates moderate baseline presence, moderate spring carry-over, moderate pre-summer retention, moderate summer suppression, and strong summer decay acceleration.

Confidence
High
Fit score
0.194
Peak detectability
April
Lowest detectability
August

Seasonal wheel

Seasonal wheel for Pheasant Pheasant Peak: April

Calendar strip

Jan 0.39
Feb 0.41
Mar 0.64
Apr 0.94
May 0.61
Jun 0.4
Jul 0.31
Aug 0.18
Sep 0.23
Oct 0.25
Nov 0.27
Dec 0.42

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

Classification evidence

Target peak month
4
Target peak label
April
Target trough month
8
Target trough label
August
Target peak value
0.942
Target trough value
0.179
Target mean value
0.421
Target amplitude
0.763
Baseline to peak ratio
0.272
Autumn to winter weight ratio
0.043
Year end to winter weight ratio
0.339
Decay to growth ratio
1.992

Observed and Simulated Seasonal Patterns

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

Dataset FN-WL-SEASONAL Author David Walker Publisher Field Notes Journal Version 2026.05.26

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