Field Notes Journal

Seasonal Analysis and Species Classification

Great Tit

Model Family : Resident detectability

Summary

Great Tit

Resident with summer detectability collapse

Great Tit 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, strong pre-summer retention, moderate summer suppression, and strong summer decay acceleration.

Confidence
High
Fit score
0.176
Peak detectability
April
Lowest detectability
August

Seasonal wheel

Seasonal wheel for Great Tit Great Tit Peak: April

Calendar strip

Jan 0.4
Feb 0.45
Mar 0.72
Apr 0.82
May 0.52
Jun 0.41
Jul 0.3
Aug 0.16
Sep 0.23
Oct 0.27
Nov 0.3
Dec 0.41

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
0.817
Target trough value
0.159
Target mean value
0.415
Target amplitude
0.658
Baseline to peak ratio
0.331
Autumn to winter weight ratio
0.066
Year end to winter weight ratio
0.345
Decay to growth ratio
1.913

Observed and Simulated Seasonal Patterns

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

Dataset FN-WL-SEASONAL Author David Walker Publisher Field Notes Journal Version 2026.05.21

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