An improved woodchuck trap [Un piège àmarmotte amélioré].

Résumé

Escapes from conventional box traps, especially by previously captured animals, prompted development of an improved trap to catch woodchucks Marmota monax). A comparison of trapping periods with improved and conventional traps showed a marked increase in the number of woodchucks captured with the improved trap, as well as an increase in the proportion of previously marked animals held.