Table 2 Competing GLMMs to evaluate the influence of different biological traits and extrinsic factors (comprising both technical and environmental variables) on the fix loss rate (FLR).

From: Influence of individual biological traits on GPS fix-loss errors in wild bird tracking

Model

Factors

K

AIC

∆AIC

W

M1

T_PTT − RPF + Age + Sex + Territ + Br_S + (1|Indiv)

10

6929.6

0

0.725

M2

T_PTT – Dcycle − RPF + Age + Sex + Territ + Br_S + (1|Indiv)

11

6931.6

1.94

0.275

  1. The individual (Indiv) was included as a random factor. We present the most parsimonious selected model with ΔAIC < 2. K total number of parameters (explanatory terms + random term + residual deviance), AIC corrected Akaike information criterion, ΔAIC difference between the AIC value for that model and the best model, W Akaike weight. Biological traits included: flight activity measured through the rate of fix perched (RPF), age (Age), territorial status (Territ), breeding season (Br_S) and sex (Sex). Technical variables were transmitter usage time (T_PTT) and duty cycle (Dcycle), and environmental variables were topographic altitude, surface solar radiation, and total precipitation.
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