- Associated Press - Thursday, March 3, 2016

JACKSON, Wyo. (AP) - Wildlife officials at the National Elk Refuge have put tracking collars on 25 elk as part of a pilot study on herd pregnancies.

The Jackson Hole News & Guide reports (https://bit.ly/1LBivFW ) that the Elk Refuge will try to study differences in pregnancy rates on the Jackson Elk Herd’s summer ranges.

Officials say for years, the short-distance migratory portion of the herd has had better reproductive success. The pregnancy study is aimed at seeing why that is the case.

Officials were only able to see a few animals on Monday and Tuesday because a fenced trap failed to catch any elk. Wildlife officials instead had to use tranquilizer guns to collar the animals and test them for body fat, disease and pregnancy.

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Information from: Jackson Hole (Wyo.) News And Guide, https://www.jhnewsandguide.com

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