Use of Radio Tracking to Improve the Estimation by Track Counts of the Relative Abundance of Red Fox

im prove the estim ation by track counts of the rela tive abundance of red fox. Acta theriol., 32, 30: 489—492 [With 1 Fig.] Radio tracking of red foxes Vulpes vulpes (Linnaeus, 1758) in Coto Doñana (SW Spain) was used to obtain a correction factor to transform the num ber of fox trails crossing a transect into an index of relative abundance, expressed as individual foxes per km. Results prove th a t the patterns of fox m ovem ent and the transect position greatly influence the data obtained through track counts