A plethora of new R Coronae Borealis stars from a dedicated spectroscopic follow-up survey.

It is increasingly suspected that R Coronae Borealis (RCB) stars - rare hydrogen-deficient and carbon-rich supergiant stars - are the product of mergers of white-dwarfs in the intermediary mass regime ($0.6 10000$ K). Forty of these belong to the Milky Way and five are located in the Magellanic Clouds. We also confirmed that the long lasting candidate KDM 5651 is indeed a new Magellanic RCB star, increasing the total number of Magellanic Cloud RCB stars to 30. We have increased by $sim$50% the total number of RCB stars known, now reaching 147. We also include a list of 14 strong RCB candidates, most certainly observed during a dust obscuration phase. From the detection efficiency and success rate so far, we estimate that there should be no more than 500 RCB stars/HdC stars in the Milky Way.