Les hommes ont oublié cette vérité. Mais tu ne dois pas l'oublier, dit le renard. Tu deviens responsable pour toujours de ce que tu as apprivoisé.
Le Petit Prince, chap. 21

Tuesday, 11 June 2013

Bells reduce by half predation by cats

Ruxton, G. D., Thomas, S., & Wright, J. W. (2002). Bells reduce predation of wildlife by domestic cats (Felis catus). Journal of Zoology, 256(1), 81-83.

Twenty-one cat owners from a 100 km2  area, centred on Carnforth, Lancashire, England, recorded each dead prey item delivered by their cat or cats during an 8-week period, following one of three experimental schedules, each of which required each cat to have a bell on a collar for only half of the time. The mean number of items each cat delivered to the owner was 2.9 in the 4 weeks when the cats had a bell attached, compared to 5.5 for the equivalent time when the bell was absent. The bell had no effect on the relative numbers of different prey types delivered, and there was no evidence that the cats adapted their hunting behaviour to reduce the effect of the bell over time.

Read a short review about belling effectiveness

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