Fans of the noble buffalo should roam over to the Rayburn Foyer this evening for a “National Bison Day” warm-up featuring gourmet sliders, wine and small batch bourbon honoring the majestic beast.

A reception sponsor told HOH that Wednesday’s reception, which is open to all, will feature bison sliders provided by Ted’s Montana Grill as well as samples of bourbon poured by Buffalo Trace Distillery. The festivities are set to kick off at 6:30 p.m.

This marks the second year in a row that the bison lobby has partied with Congress. Rough Rider Teddy Roosevelt — the Washington Nationals’ “racing presidents” version of him, anyway — joined lawmakers at last year’s inaugural fete.

The Vote Bison Coalition has much to celebrate, having just scored the Senate’s endorsement of earmarking Nov. 2 as “National Bison Day.” Rep. William Lacy Clay, D-Mo., who is sponsoring a bill to designate bison as the “national mammal,” is also expected to say a few words.