Mobility, activity patterns, habitat-use and some morphological traits of two often co-occurring satyrine butterflies of grasslands - the meadow brown (Maniola jurtina) and the hedge brown (Pyronia tithonus) - were studied by a mark-release-recapture method at two areas. Additionally, some flight-related morphological traits of a series of collected females of P. tithonus were compared between recently colonized and permanent populations. The more active, but less mobile P. tithonus got faster wing damage than did M. jurtina and had more, and more symmetrically spread eyespots on the wings. For both species, the micro-distribution was affected by shelter, long vegetation and nectar, but this was more pronounced in P. tithonus. It is hypothesized that P. tithonus may traverse the same landscape at a slower rate than M. jurtina.