Seasonal Analysis and Species Classification

Robin

Model Family : Resident detectability

Robin (Erithacus rubecula) at Radley Lakes David Walker, Field Notes Journal ( CC BY 4.0 )

Robin (Erithacus rubecula) at Radley Lakes David Walker, Pixelfed ( CC BY 4.0 ) Source - No changes made

Robin (Erithacus rubecula) in Bagley Wood David Walker, Field Notes Journal ( CC BY 4.0 )

Robin (Erithacus rubecula) David Walker, Field Notes Journal ( CC BY 4.0 )

Robin (Erithacus rubecula), Abingdon, UK David Walker, Field Notes Journal ( CC BY 4.0 )

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 February 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

Medium

Fit score

0.229

Peak detectability

February

Lowest detectability

August

Seasonal wheel

Calendar strip

Jan 0.62

Feb 0.75

Mar 0.58

Apr 0.45

May 0.42

Jun 0.42

Jul 0.22

Aug 0.2

Sep 0.26

Oct 0.28

Nov 0.29

Dec 0.47

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

8

Target trough label

August

Target peak value

0.748

Target trough value

0.196

Target mean value

0.412

Target amplitude

0.552

Baseline to peak ratio

0.361

Autumn to winter weight ratio

0.069

Year end to winter weight ratio

0.626

Decay to growth ratio

1.341

Observed and Simulated Seasonal Patterns

Robin Observed Presence, Abingdon

Robin Observed Totals, Abingdon

Robin Simulated Presence, Abingdon