Seasonal Analysis and Species Classification
Gadwall
Model Family : Resident detectability
Summary
Gadwall
Resident with summer detectability collapse
Gadwall is classified as resident with summer detectability collapse. The fitted resident detectability target peaks around February and reaches its lowest point around May. The model indicates weak baseline presence, weak spring carry-over, strong pre-summer retention, moderate summer suppression, and strong summer decay acceleration.
- Confidence
- Medium
- Fit score
- 0.234
- Peak detectability
- February
- Lowest detectability
- May
Seasonal wheel
Calendar strip
Jan
0.45
Feb
0.47
Mar
0.17
Apr
0.09
May
0.0
Jun
0.04
Jul
0.07
Aug
0.04
Sep
0.04
Oct
0.05
Nov
0.07
Dec
0.28
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
- 5
- Target trough label
- May
- Target peak value
- 0.468
- Target trough value
- 0.0
- Target mean value
- 0.148
- Target amplitude
- 0.468
- Baseline to peak ratio
- 0.085
- Autumn to winter weight ratio
- 0.069
- Year end to winter weight ratio
- 0.382
- Decay to growth ratio
- 1.54
Observed and Simulated Seasonal Patterns
