BATAVIA, Ill. (WLS) -- Fermilab in Batavia is celebrating the beginning of calving season with a double delivery of baby bison.
Fermilab has been home to a herd of bison since 1969.
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This year they're expecting the births of 20 calves.
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The bison are a huge draw for visitors, so much so that the herd can be viewed anytime from their bison cam.
The bison cam can be found here.