A Field Assessment of the Anticoagulant Brodifacoum Against Rabbits, Oryctolagus-Cuniculus

The effectiveness of 100 p.p.m. brodifacoum for controlling an island population of rabbits was assessed and compared with that of 200 p.p.m. 1080 (sodium monofluoroacetate). Both compounds were applied in an apple-based, raspberry-flavoured jam bait after pre-feeding with the same non-toxic bait. Brodifacoum and 1080 both reduced rabbit populations by 85% on average, compared with an average 'natural' decline of 34% on untreated sites; these estimates of poisoning mortality may be considered conservative, however, because of post-poisoning migration onto poisoned sites.