( CNN ) -- They may not beat the Duggars for sheer number of children , but this couple in Michigan has their own kind of reality-TV-worthy reproduction streak going on . Kateri and Jay Schwandt of Rockford have 12 sons and no daughters , all conceived naturally , according to the Detroit Free Press . The odds of that happening are approximately 1 in 4,000 . `` Star Wars ' `` C-3PO says you have a better chance of navigating an asteroid field successfully than of duplicating their streak . Better yet ? Baby No . 13 is due in May , and Kateri , at least , is hoping for another boy . The odds of the couple having 13 sons in a row is about 1 in 8,000 . Of course , that 's not as unlikely as say , winning the Mega Millions jackpot ( odds : 1 in 175,711,536 ) . But it 's awfully close to your risk of being struck by lightning . Here are some other birth odds : . Odds of having a boy : 1 in 2 . Odds of having a girl : 1 in 2 . Odds of having natural identical twins : About 1 in 250 . Odds of having conjoined twins : About 1 in 200,000 . Odds of twins giving birth on the same day : 1 in 400,000 . Odds of having natural triplets : About 1 in 8,100 . Odds of having natural quadruplets : About 1 in 700,000 . CNN 's Curt Merrill contributed to this story .
A couple in Michigan has 12 sons and no daughters . Baby number 13 is on the way ; they do n't know its sex . Comment: