Field Notes Journal

Seasonal Analysis and Species Classification

Jackdaw

Model Family : Resident detectability

Summary

Jackdaw

Resident with spring persistence and summer suppression

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

Confidence
Low
Fit score
0.435
Peak detectability
May
Lowest detectability
August

Seasonal wheel

Seasonal wheel for Jackdaw Jackdaw Peak: May

Calendar strip

Jan 0.8
Feb 0.8
Mar 0.81
Apr 0.9
May 1.09
Jun 0.97
Jul 0.61
Aug 0.38
Sep 0.47
Oct 0.54
Nov 0.58
Dec 0.7

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
5
Target peak label
May
Target trough month
8
Target trough label
August
Target peak value
1.086
Target trough value
0.379
Target mean value
0.72
Target amplitude
0.706
Baseline to peak ratio
0.508
Autumn to winter weight ratio
0.095
Year end to winter weight ratio
0.536
Decay to growth ratio
1.43

Observed and Simulated Seasonal Patterns

Jackdaw Observed Presence, Abingdon
Jackdaw Observed Presence, Abingdon
Jackdaw Observed Totals, Abingdon
Jackdaw Observed Totals, Abingdon
Jackdaw Simulated Presence, Abingdon
Jackdaw 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. Jackdaw. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.26. https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/jackdaw.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 = {Jackdaw},
  year = {2026},
  publisher = {Field Notes Journal},
  version = {2026.05.26},
  url = {https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/jackdaw.html}
}