translate English to French: Comparisons of the species composition in the diet during laying with that of animals trapped indicated that bank voles were usually taken approximately in proportion to their relative abundance, whereas field voles were frequently taken more and grey-sided voles less than expected from their relative abundance.
La comparaison des campagnols du régime et des campagnols capturés dans les pièges a révélé que les Campagnols roussâtres étaient ordinairement consommés en proportion de leur abondance relative, alors que les Campagnols agrestes l'étaient souvent plus et les Campagnols gris-roux, moins.