BATAVIA, Ill. (WLS) -- Fermilab in west suburban Batavia welcomed its first baby bison of the year on Tuesday.
The birth increases the size of the herd to 18.
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As many as 14 more are expected to be born before early June.
The bison herd was established on the grounds of Fermilab in 1969 as a symbol of the Midwestern prairie.
A baby bison was born at Fermilab on April 26, 2016. (Fermilab)
A baby bison was born at Fermilab on April 26, 2016. (Fermilab)
A baby bison was born at Fermilab on April 26, 2016. (Fermilab)
A baby bison was born at Fermilab on April 26, 2016. (Fermilab)
A baby bison was born at Fermilab on April 26, 2016. (Fermilab)