Field observations of courtship displays in a natural population of crested newts, Triturus cristatus, are described. Males were observed both courting females and displaying to other males, and male: male interactions were as frequent as courtships. Many courtships were also interrupted by intruding males, and courtship success was less than 7%. A comparison is made with aquaria studies, which shows that the presence of more individuals in the field, where newts aggregate in leks when breeding, is influencing male behaviour. On the other hand, the different features of the displays observed in the field did not differ to any major extent from behaviour patterns observed in aquaria studies.