Behavioral Ecology and Sociobiology, Vol. 34, No. 5 (1994), pp. 321-327 (7 pages) Migratory stonechats (Saxicola torquata) spend the winter in the northern Negev desert in Israel. After arrival in ...

Play is an enigmatic behaviour, the function of which is still debated, despite more than a century of research. We discuss the evolutionary function of play behaviour, focusing on the domestic dog ...