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Providing evidence to improve practice

Individual study: Are the same bears repeatedly translocated from corn crops in Wisconsin?

Published source details

Shivik J.A., Ruid D., Willging R.C. & Mock K.E. (2011) Are the same bears repeatedly translocated from corn crops in Wisconsin? Ursus, 22, 114-119


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Translocate crop raiders away from crops (e.g. elephants) to reduce human-wildlife conflict Terrestrial Mammal Conservation

A study in 2006–2007 across a large portion of northern Wisconsin, USA (Shivik et al. 2011) found that most American black bears Ursus americanus translocated away from sites of damage to corn crops were not subsequently recaptured at sites of crop damage. Out of 520 translocated bears, 20 (4%) were recaptured during subsequent capture activities at sites of crop damage (including the original capture site). Average time to recapture was 45 days. Recaptured bears had been moved 40–64 km following initial capture. Of the total of 21 recaptures of 20 recaptured bears (one was recaptured twice), nine (43%) were at the original capture site and 15 (71%) were within 10 km of the original capture site. Bears were captured on 55 farms from 11 August to 9 October 2006 and 50 farms from 3 August to 12 October 2007. Skin samples were taken using a biopsy dart and 541 out of 567 samples produced genetic material that enabled identification of 520 individuals.

(Summarised by Nick Littlewood)