Birdcatcher's English offspring did well, and earned him the Champion Sire title for 1852 and 1856. He was among the top sires 15 times during his breeding career. Birdcatcher was the first Irish-bred stallion to sire winners of English classic races, including seven offspring accounting for three St. Leger wins, two One Thousand Guineas wins, and a win at the Derby and the Oaks. Birdcatcher also founded two male lines, one with Oxford, and another with The Baron, from whom most Thoroughbreds descend today.
