1. Adams SB, Frissell CA (2001) Thermal habitat use and evidence of seasonal migration by Rocky Mountain tailed frogs, Ascaphus montanus, in Montana. Canadian Field-Naturalist 115: 251–256
2. Adler K (1976) Extraocular photoreception in amphibians. Photochemistry and Photobiology 23: 275–298
3. Adler K, Phillips JB (1985) Orientation in a desert lizard (Uma notata): time-compensated compass movement and polarotaxis. Journal of Comparative Biology 156: 547–552
4. Åkesson S, Broderick AC, Glen F, Godley BJ, Luschi P, Papi F, Hays GC (2003) Navigation by green turtles: which strategy do displaced adults use to find Ascension Island? Oikos 103: 363–372
5. Alcock J (1975) Animal Behaviour: An Evolutionary Approach. Sinauer Associates, Sunderland, Massachusetts