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Table 3 Candidate weather models formulated to explain variation in the timing of departure among autumn-migrating dabbling ducks in Illinois River valley, as detected by weather surveillance radar, 1995–2009, ranked by ascending Akaike’s Information Criterion (AIC). We included YEAR as a random effect in each model. wi indicates model weight and K indicates number of parameters used in each model

From: The effect of weather on the decision to migrate from stopover sites by autumn-migrating ducks

Model ΔAIC w i K
WINDALOFTINDEX + CLOUDCOVERINDEX + PRECIPINDEX 0.00 1.00 3
WINDALOFTINDEX 39.10 0.00 1
PRESSURECHANGE 182.73 0.00 1
HABITAT 233.23 0.00 1
TEMPERATURE + MEANDAILYTEMPCHG24HR + SURFWINDSPD 235.84 0.00 3
MEANDAILYTEMPCHG24HR 241.78 0.00 1
TEMPERATURE 267.19 0.00 1
PRECIPINDEX 270.24 0.00 1
PRESSURE 272.39 0.00 1
CLOUDHEIGHTINDEX + CLOUDCOVER 275.27 0.00 2
CLOUDHEIGHTINDEX 276.57 0.00 1
CLOUDCOVER 285.39 0.00 1
CLOUDCOVERINDEX 285.66 0.00 1
DATE 287.32 0.00 1
DAILYMINT 292.71 0.00 1
Null 294.81 0.00 0