Field Notes Journal

Seasonal Analysis and Species Classification

Robin

Model Family : Resident detectability

Robin (Erithacus rubecula) at Radley Lakes
Robin (Erithacus rubecula) at Radley Lakes David Walker, Field Notes Journal ( CC BY 4.0 )
Robin (Erithacus rubecula) at Radley Lakes
Robin (Erithacus rubecula) at Radley Lakes David Walker, Pixelfed ( CC BY 4.0 ) Source - No changes made
Robin (Erithacus rubecula) in Bagley Wood
Robin (Erithacus rubecula) in Bagley Wood David Walker, Field Notes Journal ( CC BY 4.0 )
Robin (Erithacus rubecula)
Robin (Erithacus rubecula) David Walker, Field Notes Journal ( CC BY 4.0 )
Robin (Erithacus rubecula), Abingdon, UK
Robin (Erithacus rubecula), Abingdon, UK David Walker, Field Notes Journal ( CC BY 4.0 )
Robin (Erithacus rubecula), Abingdon, UK
Robin (Erithacus rubecula), Abingdon, UK David Walker, Field Notes Journal ( CC BY 4.0 )

Summary

Robin

Resident with summer detectability collapse

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

Confidence
Medium
Fit score
0.23
Peak detectability
March
Lowest detectability
August

Seasonal wheel

Seasonal wheel for Robin Robin Peak: March

Calendar strip

Jan 0.11
Feb 0.22
Mar 0.51
Apr 0.5
May 0.19
Jun 0.11
Jul 0.01
Aug 0.0
Sep 0.03
Oct 0.05
Nov 0.08
Dec 0.18

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
3
Target peak label
March
Target trough month
8
Target trough label
August
Target peak value
0.508
Target trough value
0.0
Target mean value
0.167
Target amplitude
0.508
Baseline to peak ratio
0.106
Autumn to winter weight ratio
0.053
Year end to winter weight ratio
0.333
Decay to growth ratio
1.114

Observed and Simulated Seasonal Patterns

Robin Observed Presence, Thrupp Lake
Robin Observed Presence, Thrupp Lake
Robin Observed Totals, Thrupp Lake
Robin Observed Totals, Thrupp Lake
Robin Simulated Presence, Thrupp Lake
Robin Simulated Presence, Thrupp Lake

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. Robin. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.26. https://fieldnotesjournal.uk/wildlife/seasonal/thrupp_lake/robin.html

Dataset FN-WL-SEASONAL Author David Walker Publisher Field Notes Journal Version 2026.05.26
Reference: Walker, David. Robin. Field Notes Journal. ID FN-WL-SEASONAL. Version 2026.05.26.

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