Field Notes Journal

Seasonal Analysis and Species Classification

Song Thrush

Model Family : Resident detectability

Summary

Song Thrush

Resident with summer detectability collapse

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

Confidence
Medium
Fit score
0.243
Peak detectability
April
Lowest detectability
September

Seasonal wheel

Seasonal wheel for Song Thrush Song Thrush Peak: April

Calendar strip

Jan 0.18
Feb 0.29
Mar 0.6
Apr 0.69
May 0.35
Jun 0.19
Jul 0.16
Aug 0.04
Sep 0.0
Oct 0.0
Nov 0.06
Dec 0.22

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
9
Target trough label
September
Target peak value
0.686
Target trough value
0.0
Target mean value
0.232
Target amplitude
0.686
Baseline to peak ratio
0.077
Autumn to winter weight ratio
0.04
Year end to winter weight ratio
0.364
Decay to growth ratio
1.764

Observed and Simulated Seasonal Patterns

Song Thrush Observed Presence, Abingdon
Song Thrush Observed Presence, Abingdon
Song Thrush Observed Totals, Abingdon
Song Thrush Observed Totals, Abingdon
Song Thrush Simulated Presence, Abingdon
Song Thrush 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. Song Thrush. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.21. https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/song_thrush.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 = {Song Thrush},
  year = {2026},
  publisher = {Field Notes Journal},
  version = {2026.05.21},
  url = {https://fieldnotesjournal.uk/wildlife/seasonal/abingdon/song_thrush.html}
}