Supplement 1. WinBUGS code, and sample data and initial values, for stage-2 state–space model analysis of movement paths.

File List CodeSupplement_model.txt -- WinBUGS code CodeSupplement_data and inits.txt -- sample data and initial values Description “CodeSupplement_model.txt” contains WinBUGS code for running the stage-2 state-space model in: S. Eckert, J. Moore, D. Dunn, R. Sagarminaga, K. Eckert, P. Halpin "Hierarchical state-space models of loggerhead sea turtle (Caretta caretta) movement in relation to turtle size and oceanographic features in the western Mediterranean Sea". Code includes prior specification for all estimated parameters and hyper-parameters (stochastic nodes), including parameters describing covariate effects on behavioral switch probabilities and parameters describing movement characteristics (rates and variance of turn angles) for two behavioral states. Code includes normal and wrapped Cauchy likelihoods for mode-specific movement parameters and a Bernoulli likelihood for behavioral state. Model is based on a hierarchical switch model from: J. Morales, D. Haydon, J. Frair, K. Holsinger, and J. Fryxell. Extracting more out of reloction data: building movement models as mixtures of random walks. Ecology 85:2436–2445. “CodeSupplement_data and inits.txt” contains sample data and initial values in WinBUGS format. All data were standardized as z-scores for analysis.