Cleasby, I. R., Nakagawa, S., Schielzeth, H. (2015), Quantifying the
predictability of behaviour: statistical approaches for the study of
between-individual variation in the within-individual variance. Methods
in Ecology and Evolution, 6: 27–37. doi: 10.1111/2041-210X.12281
Animal predictability and "personality" research seems to be a big fan of mixed/hierarchical GLM models.