1. Aalto P, Ader A, Baumanis J, Busse P, Latja A, Leivits A, Miettinen J, Ojanen M, Pakkala H, Tynjälä M, Vilbaste E (1995) Autumn migration of the willow tit (Parus montanus). Ring 17:1–2
2. Beissinger SR, McCullough DR (2002) Population viability analysis. The University of Chicago Press, Chicago, IL
3. Blondel J, Pradel R, Lebreton JD (1992) Low fecundity insular blue tits do not survive better as adults than high fecundity mainland ones. J Anim Ecol 61:205–213
4. Brodin A, Lahti K, Lens L, Suhonen J (1996) A northern population of willow tits Parus montanus did not store more food than southern ones. Ornis Fennica 73:114–118
5. Burnham KP, Anderson DR (1998) Model selection and inference: a practical information theoretic approach. Springer, Berlin Heidelberg New York