Field Notes Journal

Seasonal Analysis and Species Classification

Coot

Model Family : Resident detectability

Coot (Fulica atra), Farmoor Reservoir, UK
Coot (Fulica atra), Farmoor Reservoir, UK David Walker, Field Notes Journal ( CC BY 4.0 )
Coot (Fulica atra), Farmoor Reservoir, UK
Coot (Fulica atra), Farmoor Reservoir, UK David Walker, Field Notes Journal ( CC BY 4.0 )
Coot (Fulica atra), Farmoor Reservoir, UK
Coot (Fulica atra), Farmoor Reservoir, UK David Walker, Field Notes Journal ( CC BY 4.0 )
Coot (Fulica atra), Farmoor Reservoir, UK
Coot (Fulica atra), Farmoor Reservoir, UK David Walker, Field Notes Journal ( CC BY 4.0 )

Summary

Coot

Resident with summer detectability collapse

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

Confidence
Medium
Fit score
0.234
Peak detectability
February
Lowest detectability
September

Seasonal wheel

Seasonal wheel for Coot Coot Peak: February

Calendar strip

Jan 0.52
Feb 0.65
Mar 0.51
Apr 0.35
May 0.31
Jun 0.31
Jul 0.3
Aug 0.05
Sep 0.0
Oct 0.0
Nov 0.05
Dec 0.24

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
2
Target peak label
February
Target trough month
9
Target trough label
September
Target peak value
0.65
Target trough value
0.0
Target mean value
0.273
Target amplitude
0.65
Baseline to peak ratio
0.077
Autumn to winter weight ratio
0.07
Year end to winter weight ratio
0.459
Decay to growth ratio
1.322

Observed and Simulated Seasonal Patterns

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